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10,200 | Resistive Magnetohydrodynamic Equilibria in a Torus | physics.plasm-ph | It was recently demonstrated that static, resistive, magnetohydrodynamic
equilibria, in the presence of spatially-uniform electrical conductivity, do
not exist in a torus under a standard set of assumed symmetries and boundary
conditions. The difficulty, which goes away in the ``periodic straight cylinder
approximation... | physics |
10,201 | Toroidal Vortices in Resistive Magnetohydrodynamic Equilibria | physics.plasm-ph | Resistive steady states in toroidal magnetohydrodynamics (MHD), where Ohm's
law must be taken into account, differ considerably from ideal ones. Only for
special (and probably unphysical) resistivity profiles can the Lorentz force,
in the static force-balance equation, be expressed as the gradient of a scalar
and thus ... | physics |
10,202 | Nonlinear Two-dimensional potential plasma wake waves | physics.plasm-ph | The condition for potential description of the wake waves,generated by flat
or cylindrical driving electron bunch in cold plasma is derived.
The two-dimensional nonlinear equation for potential valid for small values
of that is obtained and solved by the separation of variables. Solutions in the
form of cnoidal waves... | physics |
10,203 | Quantum Molecular Dynamics of Partially Ionized Plasmas | physics.plasm-ph | We study a partially ionized hydrogen plasma by means of quantum molecular
dynamics, which is based on wave packets. We introduce a new model which
distinguishes between free and bound electrons. The free electrons are modelled
as Gaussian wave packets with fixed width. For the bound states the 1s-wave
function of the ... | physics |
10,204 | Current-Voltage Characteristic of a Partially Ionized Plasma in Cylindrical Geometry | physics.plasm-ph | The properties of a partially ionized plasma in a long cylindrical tube
subject to a uniform axial electric field are investigated. The plasma is
maintained by an external ionizing source balanced by bulk and surface
recombinations. Collisions between neutrals, whose density greatly exceeds the
density of charged parti... | physics |
10,205 | Cylindrical ideal magnetohydrodynamic equilibria with incompressible flows | physics.plasm-ph | It is proved that (a) the solutions of the ideal magnetohydrodynamic
equation, which describe the equlibrium states of a cylindrical plasma with
purely poloidal flow and arbitrary cross sectional shape [G. N.
Throumoulopoulos and G. Pantis, Plasma Phys. and Contr. Fusion 38, 1817 (1996)]
are also valid for incompressib... | physics |
10,206 | Kinetics of a Model Weakly Ionized Plasma in the Presence of Multiple Equilibria | physics.plasm-ph | We study, globaly in time, the velocity distribution $f(v,t)$ of a spatially
homogeneous system that models a system of electrons in a weakly ionized
plasma, subjected to a constant external electric field $E$. The density $f$
satisfies a Boltzmann type kinetic equation containing a full nonlinear
electron-electron col... | physics |
10,207 | General dispersion equation for oscillations and waves in non-collisional Maxwellian plasmas | physics.plasm-ph | We propose a new and effective method to find plasma oscillatory and wave
modes. It implies searching a pair of poles of two-dimensional (in coordinate
$x$ and time $t$) Laplace transform of self-consistent plasma electric field
$E(x,t) \to E_{p_1p_2}$, where $p_1 \equiv -i \omega$, $p_2 \equiv i k$ are
Laplace transfo... | physics |
10,208 | Streamer propagation in magnetic field | physics.plasm-ph | The propagation of a streamer near an insulating surface under the influence
of a transverse magnetic field is theoretically investigated. In the weak
magnetic field limit it is shown that the trajectory of the streamer has a
circular form with a radius that is much larger than the cyclotron radius of an
electron. The ... | physics |
10,209 | Possibility of Microturbulence Diagnostics in a Magnetically Confined Plasma Using Multiple Scattering Effects | physics.plasm-ph | The idea of new diagnostics method for the small-scale irregular structures
of magnetically confined plasma is suggested in the present paper. The method
can be based on measurements of intensity attenuation of the normal sounding
waves. Anomalous attenuation arises due to multiple scattering effects
investigated earli... | physics |
10,210 | The Analytical Solution of Radiation Transfer Equation for a Layer of Magnetized Plasma With Random Irregularities | physics.plasm-ph | The problem of radio wave reflection from an optically thick plane monotonous
layer of magnetized plasma is considered at present work. The plasma electron
density irregularities are described by spatial spectrum of an arbitrary form.
The small-angle scattering approximation in the invariant ray coordinates is
suggeste... | physics |
10,211 | Negative-energy perturbations in cylindrical equilibria with a radial electric field | physics.plasm-ph | The impact of an equilibrium radial electric field $E $ on negative-energy
perturbations (NEPs) (which are potentially dangerous because they can lead to
either linear or nonlinear explosive instabilities) in cylindrical equilibria
of magnetically confined plasmas is investigated within the framework of
Maxwell-drift k... | physics |
10,212 | Dielectric function of nonideal plasmas and electrical dc conductivity | physics.plasm-ph | Within generalized linear response theory, an expression for the dielectric
function is derived which is consistent with standard approaches to the
electrical dc conductivity. Explicit results are given for the first moment
Born approximation. Some exact relations as well as the limiting behaviour at
small values of th... | physics |
10,213 | One-particle spectral function of electrons in a hot and dense plasma | physics.plasm-ph | A self-consistent determination of the spectral function and the self-energy
of electrons in a hot and dense plasma is reported. The self-energy is
determined within the approximation of the screened potential. It is shown,
that the quasi-particle concept is not an adequate concept for hot and dense
plasmas, since the ... | physics |
10,214 | Dielectric function of a two-component plasma including collisions | physics.plasm-ph | A multiple-moment approach to the dielectric function of a dense non-ideal
plasma is treated beyond RPA including collisions in Born approximation. The
results are compared with the perturbation expansion of the Kubo formula. Sum
rules as well as Ward identities are considered. The relations to optical
properties as we... | physics |
10,215 | Nonlinear axisymmetric resistive magnetohydrodynamic equilibria with toroidal flow | physics.plasm-ph | The equilibrium of a resistive axisymmetric plasma with purely toroidal flow
surrounded by a conductor is investigated within the framework of the nonlinear
magnetohydrodynamic theory. It is proved that a) the poloidal current density
vanishes and b) apart from an idealized case the pressure profile should vanish
on th... | physics |
10,216 | Nonlinear Magnetosonic Waves in a Multi-Ion-Species Plasma | physics.plasm-ph | Magnetosonic waves are intensively studied due to their importance in space
plasmas and also in fusion plasmas where they are used in particle acceleration
and heating experiments. In the present paper we investigate the magnetosonic
waves propagating in a multi-ion-species plasma perpendicular to an external
magnetic ... | physics |
10,217 | Landau damping: is it real? | physics.plasm-ph | To calculate linear oscillations and waves in dynamics of gas and plasma one
uses as a rule the old classical method of dispersion equation for complex
frequencies $\omega$ and wave numbers $k$: $\epsilon(\omega,k)=0$. This method
appears to be inapplicable, f.e., in the case of waves in Maxwellian
collisionless plasma... | physics |
10,218 | Generation of ultra-short light pulses by a rapidly ionizing thin foil | physics.plasm-ph | A thin and dense plasma layer is created when a sufficiently strong laser
pulse impinges on a solid target. The nonlinearity introduced by the
time-dependent electron density leads to the generation of harmonics. The pulse
duration of the harmonic radiation is related to the risetime of the electron
density and thus ca... | physics |
10,219 | The Rayleigh-Taylor Instability of Transition Layer | physics.plasm-ph | New types of symmetry for the Rayleigh equation are found. For small Atwood
number, an analytic solution is obtained for a smoothly varying density
profile. It is shown that a transition layer with a finite width can undergo
some kind of stratification. | physics |
10,220 | Transverse quasilinear relaxation in inhomogeneous magnetic field | physics.plasm-ph | Transverse quasilinear relaxation of the cyclotron-Cherenkov instability in
the inhomogeneous magnetic field of pulsar magnetospheres is considered. We
find quasilinear states in which the kinetic cyclotron-Cherenkov instability of
a beam propagating through strongly magnetized pair plasma is saturated by the
force ari... | physics |
10,221 | The Radiation Transfer at a Layer of Magnetized Plasma With Random Irregularities | physics.plasm-ph | The problem of radio wave reflection from an optically thick plane monotonous
layer of magnetized plasma is considered at present work. The plasma electron
density irregularities are described by spatial spectrum of an arbitrary form.
The small-angle scattering approximation in the invariant ray coordinates is
suggeste... | physics |
10,222 | UV continuum emission and diagnostics of hydrogen-containing non-equilibrium plasmas | physics.plasm-ph | For the first time the emission of the radiative dissociation continuum of
the hydrogen molecule ($a^{3}\Sigma_{g}^{+} \to b^{3}\Sigma_{u}^{+}$ electronic
transition) is proposed to be used as a source of information for the
spectroscopic diagnostics of non-equilibrium plasmas. The detailed analysis of
excitation-deact... | physics |
10,223 | Correlated Fast Ion Stopping in Magnetized Classical Plasma | physics.plasm-ph | The results of a theoretical investigation on the stopping power of ion pair
in a magnetized electron plasma are presented, with particular emphasis on the
two-ion correlation effects. The analysis is based on the assumptions that the
magnetic field is classically strong ($\lambda_B\ll a_c\ll \lambda_D$, where
$\lambda... | physics |
10,224 | On the Theory of Relativistic Strong Plasma Waves | physics.plasm-ph | The influence of motion of ions and electron temperature on nonlinear
one-dimensional plasma waves with velocity close to the speed of light in
vacuum is investigated. It is shown that although the wavebreaking field weakly
depends on mass of ions, the nonlinear relativistic wavelength essentially
changes. The nonlinea... | physics |
10,225 | Hydrodynamical Equation for Electron Swarms | physics.plasm-ph | We study the long time behavior of light particles, e.g. an electron swarm in
which Coulomb interactions are unimportant, subjected to an external field and
elastic collisions with an inert neutral gas. The time evolution of the
velocity and position distribution function is described by a linear Boltzmann
equation (LB... | physics |
10,226 | Nonlinear wave propagation through cold plasma | physics.plasm-ph | Electromagnetic wave propagation through cold collision free plasma is
studied using the nonlinear perturbation method. It is found that the equations
can be reduced to the modified Kortweg-de Vries equation. | physics |
10,227 | Stopping of Gyratory Fast Particle in Magnetized Cold Plasma | physics.plasm-ph | The energy loss by a test gyratory particle in a cold plasma in the presence
of homogeneous magnetic field is considered. Analytical and numerical results
for the rate of energy loss are presented. This is done for strong and weak
fields (i. e., when the electron cyclotron frequency is either higher, or
smaller than th... | physics |
10,228 | Relaxed States of a Magnetized Plasma with Minimum Dissipation | physics.plasm-ph | Relaxed States of a slightly resistive and turbulent magnetized plasma is
obtained by invoking the principle of minimum dissipation which leads to curl
curl curl B = \lambda B . A solution of the above equation is accomplished
using the analytic continuation of the Chandrasekhar-Kendall eigenfunctions in
the complex do... | physics |
10,229 | Equation of state of a strongly magnetized hydrogen plasma | physics.plasm-ph | The influence of a constant uniform magnetic field on the thermodynamic
properties of a partially ionized hydrogen plasma is studied. Using the method
of Green' s function various interaction contributions to the thermodynamic
functions are calculated. The equation of state of a quantum magnetized plasma
is presented w... | physics |
10,230 | Kinetic theoretical foundation of Lorentzian statistical mechanics | physics.plasm-ph | A new kinetic theory Boltzmann-like collision term including correlations is
proposed. In equilibrium it yields the one-particle distribution function in
the form of a generalised-Lorentzian resembling but not being identical with
the so-called $\kappa$ distribution frequently found in collisionless turbulent
systems l... | physics |
10,231 | Collimated electron jets by intense laser beam-plasma surface interaction under oblique incidence | physics.plasm-ph | Oblique incidence of a $p$-polarized laser beam on a fully ionized plasma
with a low density plasma corona is investigated numerically by
Particle-In-Cell and Vlasov simulations in two dimensions. A single narrow
self-focused current jet of energetic electrons is observed to be projected
into the corona nearly normal t... | physics |
10,232 | Stopping of Charged Particles in a Magnetized Classical Plasma | physics.plasm-ph | The analytical and numerical investigations of the energy loss rate of the
test particle in a magnetized electron plasma are developed on the basis of the
Vlasov-Poisson equations, and the main results are presented. The Larmor
rotation of a test particle in a magnetic field is taken into account. The
analysis is based... | physics |
10,233 | Ponderomotive force of quasi-particles in a plasma | physics.plasm-ph | We derive the force exerted in the background plasma by an arbitrary
distribution of non interacting quasi-particles, corresponding to either
collective excitations of the plasma (plasmons, phonons) or em dressed
particles (photons, neutrinos). Our approach is based on the effective
Hamiltonian describing the quasi-cla... | physics |
10,234 | Collective Absorption Dynamics and Enhancement in Deformed Targets | physics.plasm-ph | The interaction of intense fs laser pulses with thin foils that have an
imposed deformation is compared with thick targets that develop bow shocks.
Both target types yield good absorption. Up to 80% absorption is obtained for a
$0.2\mu m$ thick, 15 times over-dense foil at $4 \cdot 10^{18} W/cm^2$. A value
of 50% is ob... | physics |
10,235 | Bounds on the Mobility of Electrons in Weakly Ionized Plasmas | physics.plasm-ph | We obtain exact upper and lower bounds on the steady state drift velocity,
and kinetic energy of electrons, driven by an external field in a weakly
ionized plasma (swarm approximation). The scattering is assumed to be elastic
with simplified velocity dependence of the collision cross sections. When the
field is large t... | physics |
10,236 | An Explicit Solution for Nonlinear Plasma Waves of Arbitrary Amplitude | physics.plasm-ph | Based on the known implicit solution for nonlinear plasma waves, an explicit
solution was obtained in the form of decomposition into harmonics. The solution
obtained exhibits a mechanism for steepening of nonlinear plasma wave as a
result of increasing contribution of harmonics and may be used in theoretical
studies of... | physics |
10,237 | Search for low-dimensional chaos in a reversed field pinch plasma | physics.plasm-ph | An analysis of experimental data from the RFX (Reversed Field eXperiment)
reversed field pinch machine [L. Fellin, P. Kusstatscher and G. Rostagni,
Fusion Eng. Des. {\bf 25}, 315 (1995)] is carried out to investigate the
possible existence of deterministic chaos in the edge plasma region. The
mathematical tools used in... | physics |
10,238 | Chaotic dynamics and coherent structure in electron beam with virtual cathode in the diode with local neutralization | physics.plasm-ph | The paper consider a complex dynamics of electron beam with virtual cathode
and local neutralization of the beam charge density near anode. Different types
of nonlinear behaviour, including deterministic chaos, were treated. It is
shown that chaotic dynamics arises as results of spatiotemporal structures
interaction. | physics |
10,239 | Modeling of ions energy distribution profile of electronegative plasma discharges with an efficient Monte Carlo simulator | physics.plasm-ph | The crucial role that Ions Energy Distribution Function (IEDF) at the
electrodes plays in plasma processing of semiconductor materials demands that
this quantity be predicted with high accuracy and with low noise levels in any
plasma simulator. In this work, an efficient Particle-in-cell/Monte-Carlo
(PIC/MC) simulator ... | physics |
10,240 | Resonance broadening theory of Farley-Buneman turbulence in the auroral E-region | physics.plasm-ph | The conventional theory of resonance broadening for a two-species plasma in a
magnetic field is revised, and applied to an ionospheric turbulence case. The
assumptions made in the conventional theory of resonance broadening have, in
the past, led to replacing the frequency $\omega$ by
$\omega+ik_{\perp}^{2}D^{*}$ in th... | physics |
10,241 | Mode-coupling and nonlinear Landau damping effects in auroral Farley-Buneman turbulence | physics.plasm-ph | The fundamental problem of Farley-Buneman turbulence in the auroral
$E$-region has been discussed and debated extensively in the past two decades.
In the present paper we intend to clarify the different steps that the auroral
$E$-region plasma has to undergo before reaching a steady state. The
mode-coupling calculation... | physics |
10,242 | Dependence of Ordinary Wave Anomalous Absorption on the sounding Problem Parameters | physics.plasm-ph | The paper describes the straightforward method of calculation of anomalous
absorption of ordinary wave due to transformation into plasma wave in the
upper-hybrid resonance region of magnetized plasma with random irregularities.
The method is based on the general approach to calculation of scattering or
transformation c... | physics |
10,243 | Investigation of Joint Effect of Two Mechanisms of Probe Wave Anomalous Attenuation | physics.plasm-ph | Two mechanisms of anomalous attenuation of probe waves in the experiments of
ionosphere modification are discussed in the paper. The first mechanism is the
well-known conversion of ordinary wave into plasma waves due to scattering from
random irregularities in the upper-hybrid resonance region. The second
mechanism is ... | physics |
10,244 | Enskog-Landau kinetic equation. Calculation of the transport coefficients for charged hard spheres | physics.plasm-ph | Using charged hard spheres model as an example, the dense one-component
plasma is considered. For this model the Enskog-Landau kinetic equation is
obtained and its normal solution is found using the Chapman-Enskog method.
Transport coefficients are obtained numerically and analytically and compared
with the experimenta... | physics |
10,245 | Normal solution to the Enskog-Landau kinetic equation. Boundary conditions method | physics.plasm-ph | Nonstationary and nonequilibrium processes are considered on the basis of an
Enskog-Landau kinetic equation using a boundary conditions method. A
nonstationary solution of this equation is found in the pair collision
approximation. This solution takes into account explicitly the influence of
long-range interactions. Ne... | physics |
10,246 | Normal solution and transport coefficients to the Enskog-Landau kinetic equation for a two-component system of charged hard spheres. The Chapman-Enskog method | physics.plasm-ph | An Enskog-Landau kinetic equation for a many-component system of charged hard
spheres is proposed. It has been obtained from the Liouville equation with
modified boundary conditions by the method of nonequilibrium statistical
operator. On the basis of this equation the normal solutions and transport
coefficients such a... | physics |
10,247 | Excitation of Electromagnetic Wake Fields by one-dimensional Electron Bunch in Plasma in the Presence of Circularly Polarized Intense Electromagnetic Wave | physics.plasm-ph | The excitation of electromagnetic (EM) wake waves in electron plasma by an
one-dimensional bunch of charged particles has been considered in the presence
of intense monochromatic circularly polarized electromagnetic (CPEM) pump wave.
In the zero state (in the absence of bunch) the interaction of the pump wave
with plas... | physics |
10,248 | The Effect of Neutral Atoms on Capillary Discharge Z-pinch | physics.plasm-ph | We study the effect of neutral atoms on the dynamics of a capillary discharge
Z-pinch, in a regime for which a large soft-x-ray amplification has been
demonstrated. We extended the commonly used one-fluid magneto-hydrodynamics
(MHD) model by separating out the neutral atoms as a second fluid. Numerical
calculations usi... | physics |
10,249 | The two-particle problem in a many-particle system: I. Dynamically screened ladder approximation | physics.plasm-ph | The two-particle problem within a nonequilibrium many-particle system is
investigated in the framework of real-time Green's functions. Starting from the
dynamically screened ladder approximation of the nonequlibrium Bethe-Salpeter
equation, a nonequilibrium Dyson equation is given for two-time two-particle
Green's func... | physics |
10,250 | Enskog-Landau kinetic equation for multicomponent mixture. Analytical calculation of transport coefficients | physics.plasm-ph | The Enskog-Landau kinetic equation is considered to describe non-equilibrium
processes of a mixture of charged hard spheres. This equation has been obtained
in our previous papers by means of the non-equilibrium statistical operator
method. The normal solution of this kinetic equation found in the first
approximation u... | physics |
10,251 | Collisionless Damping of Low-Frequency Magnetosonic Pulses in a Two-Ion-Species Plasma | physics.plasm-ph | Low-frequency mangnetosonic pulses in a two-ion-species plasma are studied
theoretically and by simulation with a one-dimensional electromagnetic
simulation code based on a three-fluid model, with particular attention to the
dynamics of minority heavy ions. It is found that heavy ions can gain some
energy from the puls... | physics |
10,252 | Quasi-classical Molecular Dynamics Simulations of the Electron Gas: Dynamic properties | physics.plasm-ph | Results of quasi-classical molecular dynamics simulations of the quantum
electron gas are reported. Quantum effects corresponding to the Pauli and the
Heisenberg principle are modeled by an effective momentum-dependent
Hamiltonian. The velocity autocorrelation functions and the dynamic structure
factors have been compu... | physics |
10,253 | The Nonlinear Debye-Onsager Relaxation Effect in Weakly Ionized Plasmas | physics.plasm-ph | A weakly ionized plasma under the influence of a strong electric field is
considered. Supposing a local Maxwellian distribution for the electron momenta
the plasma is described by hydrodynamic equations for the pair distribution
functions. These equations are solved and the relaxation field is calculated
for an arbitra... | physics |
10,254 | Quasiclassical Theory and Simulations of Strongly Coupled Plasmas | physics.plasm-ph | A survey on the dynamical and thermodynamical properties of plasmas with
strong Coulomb interactions in the quasi-classical density-temperature region
is given. First the basic theoretical concepts describing nonideality are
discussed. The chemical picture is introduced. It is shown that the nonideal
plasma subsystem o... | physics |
10,255 | Theory of Two Dimensional Mean Field Electron Magnetohydrodynamics | physics.plasm-ph | The theory of mean field electrodynamics for diffusive processes in Electron
Magnetohydrodynamic (EMHD) model is presented. In contrast to
Magnetohydrodynamics (MHD) the evolution of magnetic field here is governed by
a nonlinear equation in the magnetic field variables. A detailed description of
diffusive processes in... | physics |
10,256 | Electromagnetic modes in cold magnetized strongly coupled plasmas | physics.plasm-ph | The spectrum of electromagnetic waves propagating in a strongly coupled
magnetized fully ionized hydrogen plasma is found. The ion motion and damping
being neglected, the influence of the Coulomb coupling on the electromagnetic
spectrum is analyzed. | physics |
10,257 | Water temperature constraint on Sonoluminescence | physics.plasm-ph | It is proposed that shock wave dynamics within the gas of a small bubble
explain sonoluminescence, the emission of visible radiation. As the bubble
radius oscillates, shock waves develop from spherical sound waves created
inside the gas bubble. As any such shock propagates toward the center, it
strengthens and, upon co... | physics |
10,258 | Inhomogeneity of dusty crystals and plasma diagnostics | physics.plasm-ph | Real dusty crystals are inhomogeneous due to the presence of external forces.
We suggest approximations for calculations of different types of inhomogeneous
DC (chain and DC with a few slabs) in the equilibrium state. The results are in
a good agreement with experimental results and can be used as an effective
diagnost... | physics |
10,259 | Amplification of External EM-wave by Nonlinear Wake Waves in Cold Plasma | physics.plasm-ph | Interaction of external monochromatic, linearly polorized plane EM-wave with
nonlinear one-dimensional wake wave, generated by relativistic electron bunch
moving in cold plasma, is considered. At definite conditions on parameters of
plasma and bunch, nonlinear wake wave can have a pronounced spikes, where
plasma electr... | physics |
10,260 | Ideal magnetohydrodynamic equilibria with helical symmetry and incompressible flows | physics.plasm-ph | A recent study on axisymmetric ideal magnetohydrodynamic equilibria with
incompressible flows [H. Tasso and G. N. Throumoulopoulos, Phys. Plasmas {\bf
5}, 2378 (1998)] is extended to the generic case of helically symmetric
equilibria with incompressible flows. It is shown that the equilibrium states
of the system under... | physics |
10,261 | Two Time-dependent Solutions of Magnetic field Annihilation in Two Dimensions | physics.plasm-ph | In this paper, two classes of exact analytic time-dependent soultion of
magnetic annihilation for incompressible magnetic fluid, have been obtained by
solving the magnetohydrodynamic (MHD) equations directly. The solutions derived
here possess scaling property with time $t$ as the scale factor. Based on these
two solut... | physics |
10,262 | Anderson-Localized Ballooning Modes in General Toroidal Plasmas | physics.plasm-ph | Ballooning instabilities are investigated in three-dimensional magnetic
toroidal plasma confinement systems with low global magnetic shear. The lack of
any continuous symmetry in the plasma equilibrium can lead to these modes being
localized along the field lines by a process similar to Anderson localization.
This prod... | physics |
10,263 | Kinetic model of three component, weakly ionized, collisional plasma with a beam of neutral particles | physics.plasm-ph | Kinetic model of three component, weakly ionized, collisional plasma with a
beam of neutral particles is developed. New dispersion relations for linear
perturbations are derived and analyzed in various limiting cases. | physics |
10,264 | Generalized Action Invariants for Drift Waves-Zonal Flow Systems | physics.plasm-ph | Generalized action invariants are identified for various models of drift wave
turbulence in the presence of the mean shear flow. It is shown that the wave
kinetic equation describing the interaction of the small scale turbulence and
large scale shear flow can be naturally written in terms of these invariants.
Unlike th... | physics |
10,265 | Experimental Investigation of New Method of Energy Generation in Plasma Devices caused by Existence of Physical Space Global Anisotropy | physics.plasm-ph | An experimental investigation of a new interaction connected with the
existence of the cosmological vectorial potential, has been carried out. On its
basis, a new method of energy generation with the use of a plasma generator,
has been studied. The experimental results and complete analysis of errors in
the experiments... | physics |
10,266 | Second virial coefficient for the Landau diamagnetism of a two component plasma | physics.plasm-ph | This paper investigates the density expansion of the thermodynamic properties
of a two component plasma under the influence of a weak constant uniform
magnetic field. We start with the fugacity expansion for the Helmholtz free
energy. The leading terms with respect to the density are calculated by a
perturbation expans... | physics |
10,267 | Stopping of ion beam in a temperature anisotropic magnetized plasma | physics.plasm-ph | Using the dielectric theory for a weakly coupled plasma we investigate the
stopping power of the ion in a temperature anisotropic magnetized electron
plasma. The analysis is based on the assumption that the energy variation of
the ion is much less than its kinetic energy. The obtained general expression
for stopping po... | physics |
10,268 | Electric microfield distribution in two-component plasmas. Theory and Simulations | physics.plasm-ph | The distribution of the electric microfield at a charged particle moving in a
two-component plasma is calculated. The theoretical approximations are obtained
via the parameter integration technique and using the screened pair
approximation for the generalized radial distribution function. It is shown
that the two-compo... | physics |
10,269 | Semiclassical dynamics and time correlations in two-component plasmas | physics.plasm-ph | The semiclassical dynamics of a charged particle moving in a two-component
plasma is considered using a corrected Kelbg pseudopotential. We employ the
classical Nevanlinna-type theory of frequency moments to determine the velocity
and force autocorrelation functions. The constructed expressions preserve the
exact short... | physics |
10,270 | New tests for a singularity of ideal MHD | physics.plasm-ph | Analysis using new calculations with 3 times the resolution of the earlier
linked magnetic flux tubes confirms the transition from singular to saturated
growth rate reported by Grauer and Marliani \cite{GrauerMar99} for the
incompressible cases is confirmed. However, all of the secondary tests point to
a transition bac... | physics |
10,271 | Condensation of microturbulence-generated shear flows into global modes | physics.plasm-ph | In full flux-surface computer studies of tokamak edge turbulence, a spectrum
of shear flows is found to control the turbulence level and not just the
conventional (0,0)-mode flows. Flux tube domains too small for the large
poloidal scale lengths of the continuous spectrum tend to overestimate the
flows, and thus undere... | physics |
10,272 | Equilibrium orbit analysis in a free-electron laser with a coaxial wiggler | physics.plasm-ph | An analysis of single-electron orbits in combined coaxial wiggler and axial
guide magnetic fields is presented. Solutions of the equations of motion are
developed in a form convenient for computing orbital velocity components and
trajectories in the radially dependent wiggler. Simple analytical solutions are
obtained i... | physics |
10,273 | Resistive axisymmetric equilibria with arbitrary flow | physics.plasm-ph | An analysis of axisymmetric equilibria with arbitrary incompressible flow and
finite resistivity is presented. It is shown that with large aspect ratio
approximation or vanishing poloidal current, a uniform conductivity profile is
consistent with equilibrium flows. Also a comment made on coexistence of both
toroidal an... | physics |
10,274 | Dicluster Stopping in a Degenerate Electron Gas | physics.plasm-ph | In this paper we report on our theoretical studies of various aspects of the
correlated stopping power of two point-like ions (a dicluster) moving in close
but variable vicinity of each other in some metallic target materials the
latter being modelled by a degenerate electron gas with appropriate densities.
Within the ... | physics |
10,275 | Phase Mixing of Nonlinear Plasma Oscillations in an Arbitrary Mass Ratio Cold Plasma | physics.plasm-ph | Nonlinear plasma oscillations in an arbitrary mass ratio cold plasma have
been studied using 1-D particle-in-cell simulation. In contrast to earlier work
for infinitely massive ion plasmas it has been found that the oscillations
phase mix away at any amplitude and that the rate at which phase mixing occurs,
depends on ... | physics |
10,276 | Laser generated wake fields as a new diagnostic tool for magnetized plasmas | physics.plasm-ph | In the presence of an external magnetic field, wake fields generated by a
short laser pulse can propagate out of the plasma, and thereby provide
information about the electron density profile. A method for reconstructing the
density profile from a measured wake field spectrum is proposed and a numerical
example is give... | physics |
10,277 | Magnetic Field of Relativistic Nonlinear Plasma Wave | physics.plasm-ph | Longitudinal and transverse behavior of magnetic field of relativistic
nonlinear three-dimensional plasma wave is investigated. It is shown that the
magnetic field of the wave is different from zero and performs higher frequency
oscillations compared to the plasma electron frequency. An increase in the
nonlinearity lea... | physics |
10,278 | The effects of the rotation in plasma | physics.plasm-ph | Electric and magnetic self-fields can exist in the rotating plasma. A
self-sustained rotation can be established in the plasma. The disturbed
distribution function of rotating plasma is derived from the Vlasov equation.
The propagation of waves in rotating plasma differs from that in the usual
plasma. New terms for Lan... | physics |
10,279 | Transport control by coherent zonal flows in the core/edge transitional regime | physics.plasm-ph | 3D Braginskii turbulence simulations show that the energy flux in the
core/edge transition region of a tokamak is strongly modulated - locally and on
average - by radially propagating, nearly coherent sinusoidal or solitary zonal
flows. The flows are geodesic acoustic modes (GAM), which are primarily driven
by the Stri... | physics |
10,280 | On resistive magnetohydrodynamic equilibria of an axisymmetric toroidal plasma with flow | physics.plasm-ph | It is shown that the magnetohydrodynamic equilibrium states of an
axisymmetric toroidal plasma with finite resistivity and flows parallel to the
magnetic field are governed by a second-order partial differential equation for
the poloidal magnetic flux function $\psi$ coupled with a Bernoulli type
equation for the plasm... | physics |
10,281 | Connection between the Dielectric and the Ballistic Treatment of Collisional Absorption | physics.plasm-ph | In this work two important models of treating collisional absorption in a
laser driven plasma are compared, the dielectric and the ballistic model. We
will see that there exists a remarkable connection between these basic
approaches which could give a hint how to overcome the inherent limitations.
The approximations ma... | physics |
10,282 | Dynamical Properties and Plasmon Dispersion of a Weakly Degenerate Correlated One-Component Plasma | physics.plasm-ph | Classical Molecular Dynamics (MD) simulations for a one-component plasma
(OCP) are presented. Quantum effects are included in the form of the Kelbg
potential. Results for the dynamical structure factor are compared with the
Vlasov and RPA (random phase approximation) theories. The influence of the
coupling parameter $\... | physics |
10,283 | Multi-filament structures in relativistic self-focusing | physics.plasm-ph | A simple model is derived to prove the multi-filament structure of
relativistic self-focusing with ultra-intense lasers. Exact analytical
solutions describing the transverse structure of waveguide channels with
electron cavitation, for which both the relativistic and ponderomotive
nonlinearities are taken into account,... | physics |
10,284 | Mysteries and Unknows of Single Bubble Sonoluminescence from Viewpoint of Plasma Spectroscopy | physics.plasm-ph | UV continua observed in multi-bubble and single-bubble sonoluminescence
spectra of hydrogen-containing liquids have the same physical nature -
radiative dissociation of electronically excited hydrogen molecules (and
possibly hydrides of heavy rare gases like ArH). In the case of SBSL of "air
bubble in water" the oscill... | physics |
10,285 | A walk in the parameter space of L-H transitions without stepping on or through the cracks | physics.plasm-ph | A mathematically and physically sound three-degree-of-freedom dynamical model
that emulates low- to high-confinement mode (L--H) transitions is elicited from
a singularity theory critique of earlier fragile models. We construct a smooth
map of the parameter space that is consistent both with the requirements of
singula... | physics |
10,286 | Novel Mechanism for Single Bubble Sonoluminescence | physics.plasm-ph | Careful re-examination of typical experimental data made it possible to show
that the UV continua observed in multi-bubble (MBSL) and single-bubble (SBSL)
sonoluminescence spectra have the same physical nature - radiative dissociation
of electronically excited hydrogen molecules [and probably hydrides of heavy
rare gas... | physics |
10,287 | Self-trapping of strong electromagnetic beams in relativistic plasmas | physics.plasm-ph | Interaction of an intense electromagnetic (EM) beam with hot relativistic
plasma is investigated. It is shown that the thermal pressure brings about a
fundamental change in the dynamics - localized, high amplitude, EM field
structures, not accessible to a cold (but relativisic) plasma, can now be
formed under well- def... | physics |
10,288 | Experimental investigations of spatial distribution anisotropy of pulsed plasma generator radiation | physics.plasm-ph | Results of experimental investigation of plasma luminous emittance
(integrated with respect to time and quartz transmission band spectrum) of a
pulsed plasma generator depending on its axis spatial position, are presented.
It is shown that the spatial distribution of plasma radiant intensity is of
clearly anisotropic c... | physics |
10,289 | BGK Electron Solitary Waves Reexamined | physics.plasm-ph | This paper reexamines the physical roles of trapped and passing electrons in
electron Bernstein-Greene-Kruskal (BGK) solitary waves, also called the BGK
phase space electron holes (EH). It is shown that the charge density variation
in the vicinity of the solitary potential is a net balance of the negative
charge from t... | physics |
10,290 | Instability of Shear Waves in an Inhomogeneous Strongly Coupled Dusty Plasma | physics.plasm-ph | It is demonstrated that low frequency shear modes in a strongly coupled,
inhomogeneous, dusty plasma can grow on account of an instability involving the
dynamical charge fluctuations of the dust grains. The instability is driven by
the gradient of the equilibrium dust charge density and is associated with the
finite ch... | physics |
10,291 | Axisymmetric equilibria of a gravitating plasma with incompressible flows | physics.plasm-ph | It is found that the ideal magnetohydrodynamic equilibrium of an axisymmetric
gravitating magnetically confined plasma with incompressible flows is governed
by a second-order elliptic differential equation for the poloidal magnetic flux
function containing five flux functions coupled with a Poisson equation for the
gra... | physics |
10,292 | About Lie group of the electron magnetohydrodynamics with effect of electron inertia and finite conducting | physics.plasm-ph | The Lie group of symmetry of the one-dimensional differential equation of
electron magnetohydrodynamics with effect of electron inertia and finite
conducting is found. It's indicated that this group is group of shift of
independent variables and non single-valuety of a potential. Therefore thee no
automodel solution ex... | physics |
10,293 | Two-Surface Wave Decay | physics.plasm-ph | Using an analytical model we discuss the parametric excitation of pairs of
electron surface waves (ESW) in the interaction of an ultrashort, intense laser
pulse with an overdense plasma which has a step-like density profile. The ESWs
can be excited either by the electric or by the magnetic part of the Lorentz
force exe... | physics |
10,294 | Surface Oscillations in Overdense Plasmas Irradiated by Ultrashort Laser Pulses | physics.plasm-ph | The generation of electron surface oscillations in overdense plasmas
irradiated at normal incidence by an intense laser pulse is investigated.
Two-dimensional (2D) particle-in-cell simulations show a transition from a
planar, electrostatic oscillation at $2\omega$, with $\omega$ the laser
frequency, to a 2D electromagn... | physics |
10,295 | Damping of plasma-electron oscillations and waves in low-collision electron-ion plasmas | physics.plasm-ph | Previously developed method for finding asymptotic solutions of Vlasov
equations using two-dimensional (in coordinate x and time t) Laplace transform
is applied to low-collision electron-ion plasmas. Taking into account Coulomb
collisions in the limit m_e << m_i, \bar{v_i} << \bar{v_e}, and T_e m_e << T_i
m_i, results ... | physics |
10,296 | Erosive radially-slotted discharge in sheet current mode | physics.plasm-ph | New non-stationary non-contracted form of the erosive radially-slotted
discharge as a thin round sheet with the current of the azimuth direction have
been discovered, its existence beings stipulated by a radial transport-wave
fluxes. Characteristic features of this discharge is self-confinement of the
discharge current... | physics |
10,297 | Breakdown of adiabatic invariance in spherical tokamaks | physics.plasm-ph | Thermal ions in spherical tokamaks have two adiabatic invariants: the
magnetic moment and the longitudinal invariant. For hot ions, variations in
magnetic-field strength over a gyro period can become sufficiently large to
cause breakdown of the adiabatic invariance. The magnetic moment is more
sensitive to perturbation... | physics |
10,298 | On some generalized stopping power sum rules | physics.plasm-ph | The Lindhard-Winther (LW) equipartition sum rule shows that within the linear
response theory, the stopping power of an energetic point-charge projectile in
a degenerate electron gas medium, receives equal contributions from
single-particle and collective excitations in the medium. In this paper we show
that the LW sum... | physics |
10,299 | Fractional Kinetics for Relaxation and Superdiffusion in Magnetic Field | physics.plasm-ph | We propose fractional Fokker-Planck equation for the kinetic description of
relaxation and superdiffusion processes in constant magnetic and random
electric fields. We assume that the random electric field acting on a test
charged particle is isotropic and possesses non-Gaussian Levy stable
statistics. These assumption... | physics |
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