publicationDate stringlengths 10 10 | abstract stringlengths 0 37.3k | title stringlengths 1 5.74k | doi stringlengths 11 47 ⌀ |
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1985-01-01 | It is by now well established that renormalization group techniques provide a very powerful tool for the study of models in Statistical mechanics. These ideas were first introduced to study the problem of phase transitions, but they have proven to be useful in many other contexts like the high temperature phase in cons... | Systems with Random Couplings on Diamond Lattices | null |
1985-01-01 | The peculiar electromagnetic features of the superconducting state have been often invoked to answer the extreme sensitivity of living matter to respond to very low static magnetic fields^1, although, at present, a quantitative, exhaustive treatment is still missing. On the other side, high temperature superconductivit... | Experimental Evidence of Superconducting Properties in Human Ceruloplasmin | null |
1985-01-01 | There appears to be three regimes [1] in the physics of the rare-earth and actinide metals and compounds. The local moment regime which is the most frequent occurs when the ionization level of the f-orbitals is well below the chemical potential. The other two regimes may well be called the confined moment regime since ... | Phenemenological and Some Microscopic Aspects of Heavy Fermi-Liquids and Their Superconductivity | null |
1985-01-01 | There are spin-independent zeros in every tree-approximated radiation amplitude in gauge theories. This theorem^1,2 applies to the emission/absorption of any number of massless gauge bosons whose gauge-group symmetry is unbroken. Under certain circumstances the “radiation zeros ” lie in physical regions, and may lead t... | Classical Radiation Symmetry in Gauge Theories | null |
1985-01-01 | Localized paramagnetic states have been induced in glassy As_2S_3 at 20K by below gap light in the wavelength range 520.8 to 799.3 nm, corresponding to intrinsic absorption coefficients ranging from 100 to 0.1 cm^-1. The light induced electron spin resonance (LESR) lineshapes are similar to those induced by above gap l... | Below Gap Excitation Spectrum for Optically Induced Paramagnetic States in As_2S_3 Glass | null |
1985-01-01 | Microscopic relativistic optical potentials have been calculated for closed shell nuclei at energies near 200 MeV. These calculations go beyond the simple RIA by resolving ambiguities in the relativistic NN amplitudes and including Pauli blocking corrections. The calculations quantitatively reproduce all measured elast... | Microscopic relativistic description of nucleon-nucleus scattering | null |
1985-01-01 | ESR and NMR have been used to study the existence of a metallic state in highly alkali-doped polyacetylene. We have shown on Li-doped (CH)_x that when the dopant concentration is increased the system undergoes a transition from a state of high conductivity with no paramagnetism to a Pauli metallic state around y ~ 4%. ... | Magnetic Resonance Study of Metallic Polyacetylene | null |
1985-01-01 | Our present insight into the electronic properties of deep centers in semiconductors is illustrated by using double donors in silicon as an example. High resolution infrared absorption and photoconductivity spectra are presented which together with junction space charge measurements reveal unique information on capture... | Deep Energy Levels in Semiconductors | null |
1985-01-01 | This contribution has four sections: 1. Review of current status of localization with interactions 2. Conjectures about Phosphorous-doped Silicon 3. Comments about the inelastic scattering effect in localization 4. Magnetoresistance in disordered 2D superconductors | Comments of Some Aspects of the Localization and Interaction Problem | null |
1985-01-01 | In ion-molecule association on ion X^+ and a molecule Y are drawn together by their mutual long-range attraction to form an activated complex (1) $$ {X^ + } + Y \to X{Y^{ + *}} $$ which is prevented from dissociating (2) $$ X{Y^{ + *}} \to {X^ + } + Y $$ by being stabilized through energy being removed by a collision w... | Ion-Molecule Association | null |
1984-09-01 | After demonstrating the equivalence of an approach of the author with an earlier one of Eichten and Feinberg as far as the general form of the spin-dependent quark-antiquark potential in order 1/ m ^2 is concerned we point out an inconsistency in the further assumptions which were made in both papers. We show that ther... | Spin-dependent potentials in QCD and the correct long-range spin orbit term | null |
1984-05-01 | A regular Ising model with nearest-neighbor interactions of J and −J(J >0) on a Cayley tree of coordination number 3 is investigated for the behavior of effective fields in a uniform external field. The effective fields show periodic and also aperiodic structures in the temperature-field plane. At absolute zero tempera... | Behavior of the effective fields for a regular ising model on the Cayley tree | null |
1984-01-01 | The application of band theory to metallic systems with d- and f-orbitals in the valence and conduction bands will be discussed. Because such an application pushes theory and technique to their limits, several important features will be briefly recapitulated. Within the transition metal systems, the elemental systems w... | The Band Model for d- and f-Metals | null |
1984-01-01 | Calculation of polarization effects | null | |
1984-01-01 | From the results obtained it follows that the shape of the surface for the lower sheet of the adiabatic potential for the cluster in the E vibration space is similar to the surface for the E-e problem both in the linear and in the quadratic cases. Taking into account the extra modes of the E vibration which were discar... | Jahn-Teller effect in tetraclusters of transition metals, taking into account vibronic coupling with E-vibrations | null |
1984-01-01 | Recently considerable progress has been made in the investigations of the excited electronic states by using the Raman spectroscopy[1]. In the present paper we examin the possibility of applying of this method in the measurement of the electronic properties of magnetic semiconductors. Among those the europium chalcogen... | Theory of the Raman and Brillouin Scattering on the Excited Electronic States and Magnons in Europium Chalcogenides | null |
1984-01-01 | We investigate in a systematic way magnetic resonances in light, medium and heavy mass nuclei. The numerical calculations have been performed within the framework of the extended theory of interacting Fermi systems. Here we incorporate explicitly the π-and ρ-exchange potential in a generalized spin-dependent particle-h... | Dynamical Theory of Spin Excitations | null |
1984-01-01 | Small-particle physics deals with objects which neither belong to atomic physics nor to condensed matter. Small particles, aggregates or clusters with size as a variable quantity occupy a domain of great complexity between atoms and crystals. The two words MIE SCATTERING and CATALYSIS might indicate that this domain is... | Small Particles | null |
1984-01-01 | The isoelectronic ScNi and TiCo molecules have been trapped in argon matrices near 4 K and their electronic ground states established as ^2∑ via electron spin resonance (ESR) spectroscopy. These ground states are indicative of multiple metal—metal bonding. The hyperfine splittings at the ^47Ti^59Co nuclei indicate an a... | ScNi and TiCo Molecules | null |
1984-01-01 | A theory of field emission which takes into account the energy-band-structure of the metal emitter was initially proposed by Itskovich (1966, 1967). The next significant step was made by Politzer and Cutler (1972). Their calculation of the spin-polarized field emission current from ferromagnetic nickel (100) constitute... | Field Emission Spectroscopy of Metals | null |
1984-01-01 | Consideration of core polarization, isobar currents and meson-exchange processes gives a satisfactory understanding of the ground-state magnetic moments in closed-shell-plus (or minus)-one nuclei, A = 3, 15, 17, 39 and 41. | Magnetic Moments Revisited | null |
1984-01-01 | These lectures deal with the effects of the discrete lattice on modulated structures in solid state physics. The modulated structure could be a periodic lattice distortion, a sinusoidal or helical magnetic structure, staging of alkali metals in graphite intercalation compounds, polytypism in crystal formation, or some ... | Commensurability, Chaos, and the Devil′s Staircase | null |
1984-01-01 | Photopion processes on first sight seem like a poor choice, compared to other charge exchange probes like (n, p) or (p,n) reactions or the traditional electromagnetic probe of nuclear structure at intermediate momentum transfers, electron scattering. They can not compete in final state resolution nor in precision. Thei... | Isovector Spin States Oberved in Radiative Pion Capture in Flight and at Rest: Recent Results from SIN | null |
1984-01-01 | The cross section for inelastic electron scattering in Plane Wave Born Approximation (PWBA) contains one term that in many discussions has been considered unimportant. This term is the subject of this talk. | Transverse Contributions to Natural Parity Excitations | null |
1984-01-01 | Inclusion of the tensor q.p. interaction modifies the formulae of the Fermi liquid theory of nuclear matter. The calculations performed using several sets of the spin dependent Fermi liquid parameters show that the effect of tensor forces may be important. In particular, for the q.p. interaction derived using variation... | Tensor forces and the Fermi liquid properties of nuclear matter | null |
1983-12-01 | High spin states in^85Rb and^85Sr were populated in the reactions^76Ge(^12C, p 2 n ) and^76Ge(^12C,3 n ), respectively. The lifetimes of twelve states were measured via the recoil distance Doppler shift technique. The positive parity bands in both nuclei associated with the g _9/2 orbit exhibit decrasing E 2 strengths ... | Yrast transition strengths in^85Rb and^85Sr | null |
1983-12-01 | Coordination complexes of phenanthrenequinone monoxime with V^IVO, Cr^III, Fe^III, Ni^II or Cu^II have been synthesised and characterized by magnetic moment, i.r., and thermogravimetric analysis, and electronic and electron spin resonance spectral studies. | Characterisation of the complexes of V^IVO, Cr^III, Fe^III, Co^III, Ni^II and Cu^II with phenanthrenequinone monoxime | null |
1983-12-01 | Measurements of the enhanced superhyperfine interaction linking the electron spin of an impurity EPR ion and the nuclear moments of Van Vleck host lattice ions are reported for Ru^3+ in Tm_3Al_5O_12 and for Ru^3+ and Yb^3+ in Tm_3Ga_5O_12. The Ru^3+ results appear to be the first reported where this interaction is larg... | Enhanced superhyperfine interaction on Ru^3+ in Tm_3Al_5O_12 and on Ru^3+ and Yb^3+ in Tm_3Ga_5O_12
| null |
1983-11-01 | An iterative scheme is developed for a renormalized effective nearest-neighbor coupling K _ r and effective field per site K _ r for spins in the r th shell of a Cayley tree with nearest neighbor J , and next nearest neighbor J′ , interactions between Ising spins on the lattice. In addition to the expected paramagnetic... | Ising model with competing interactions on a Cayley tree | null |
1983-07-01 | State correlation diagrams are proposed for a number of photochemical reactions of organometallics. Spin-orbit coupling is found important to understand the reactivity of these organometallics. | State correlation diagrams for the photochemical reactions of organometallics | null |
1983-07-01 | Using crystal field approach a theoretical estimate of the ground-state wavefunctions of vanadyl ion doped in various crystals have been made using ESR data and is found to be d _xy in our coordinate system with slight admixture of the excited states $$d_{x^2 - y^2 } $$ , d _xz and d _yz. The hyperfine interaction para... | Hyperfine interaction parameters and ground-state wavefunctions of vanadyl ion complexes | null |
1983-04-01 | NMR spin echo measurements of naturally abundant^61Ni have been performed with Néel-type nickel single crystals at 4.2 K. The NMR excitation condition could properly be chosen in order to get signals either from nuclei situated within magnetic domains or within domain walls. In both cases a quadrupole splitting of the ... | NMR spin echoes and quadrupole effects in nickel single crystals | null |
1983-03-01 | The 90 K diffuse reflectance spectra of some octahedral Rh(III), Ir(III) and Pt(IV) complex compounds with chloride, thiocyanate and amine ligands are reported. The spectra show in the visible and near ultraviolet distinct bands due to spin-orbit components of singlet-triplet d-d transitions which are explained by liga... | Spin-orbit electronic states of octahedral Pt-group d
^6 complexes as derived from reflectance spectra and ligand field calculations | null |
1983-03-01 | The effects of superconducting fluctuations are investigated in a small metallic particle with spin-orbit scattering at the surface and impurity sites. The spin susceptibility and the nuclear spin relaxation time are calculated, using the Green's function method developed in a preceding paper. At low temperatures the s... | Nuclear magnetic resonance in small superconducting particles. II | null |
1983-03-01 | Medium and high spin states in^145Gd up to 3.5 MeV excitation energy have been studied by in-beam gamma ray and conversion electron spectroscopy bombarding enriched^144Sm target with a^3He beam. For a part of the identified levels a configuration is proposed in terms of weak coupling of one neutron hole with the^146Gd ... | Excited states in^145Gd from the (^3He, 2n) reaction | null |
1983-03-01 | From a shell model analysis of high-spin states in neutron deficient nuclei above^146Gd we have derived the ground state masses of the N =82 and 83 isotones of Eu, Tb, Dy, Ho, and Er. The results can be used to calculate the energies of aligned multiparticle yrast configurations. They also link ten α-decay chains to th... | Atomic masses above^146Gd derived from a shell model analysis of high spin states | null |
1983-02-01 | The optical absorption spectrum of Ni^2+ ion doped in lecontite (sodium ammonium sulphate dihydrate) single crystal has been studied at room and liquid air temperatures. All the bands could be assigned assuming O _h symmetry for the Ni^2+ ion in the crystal. The splitting of^3 T _1 g ( F ) band at liquid air temperatur... | Optical absorption spectrum of Ni^2+ ion doped in synthetic lecontite | null |
1983-02-01 | High spin states in^203, 205Bi, populated in the^203, 205Tl ( α ,4 n ) reactions, have been studied using gamma-ray and conversion-electron spectroscopy. Several previously unobserved isomeric transitions were identified by electron-electron coincidence measurements in both isotopes and in^205Bi a new isomer was found.... | Isomeric transitions in^203Bi and^205Bi | null |
1983-01-01 | The formalism relevant to exchange coupled pairs is reviewed. The relations connecting the spin hamiltonlan parameters, g, A, D,...., to those of the individual ions are provided, and thelr validity is shown through some examples. The Isotropie exchange coupling constant is discussed for series of complexes as a funeti... | Structural Magnetic Correlations in Exchange Coupled Systems | null |
1983-01-01 | The spectroscopic properties of such Mn^2+ systems as MnF_2, RbMnF_3, and KMnF_3 have been widely investigated over the past fifteen years or so. An important step in the understanding of these systems has been the realization of the role of collective excitations in determining these properties. In this article, the r... | Collective Excitations in Concentrated Mn^2+ Systems: Special Properties | null |
1983-01-01 | The strength of the chemisorptive bond is shown to be closely correlated to the local electronic structure of the metal catalyst depending on roughness and size. First, one emphasis is that surface atomic sites with a low coordination number have striking modifications from the bulk in their electronic properties. Surf... | Theory of Chemisorption on Transition Metals in Relation with Heterogenous Catalysis | null |
1983-01-01 | Zeeman spectroscopy provides information about the symmetry and the charge state of a defect. The Zeeman splitting of the initial and final state can be described by a most general effective Hamiltonian. A dynamical Jahn-Teller effect in one of the states leads to an extremely weak effective spin-orbit coupling. The re... | Magnetooptical studies of deep impurities in III–V compounds | null |
1983-01-01 | The concept of the linear variation of properties (P_i) with the orbital angular quantum number (L) of the lanthanides at their ground states is developed (P_i = w_iL + k_i). The metallic radii in the lanthanide and actinide series correlate well with the normalized ground state electronic configurations and hence the ... | Inclined W Systematics of the Lanthanides | null |
1983-01-01 | In this paper we draw attention to the importance of the following effects in electron-atom collisions: a) spin-orbit effects extracted from the electron-photon angular correlations in electron impact excitation of heavy atoms; b) interference effects in electron impact ionization of atoms extracted from spin effects i... | Electron-Photon Angular Correlation and Spin Effects in Electron-Atom Collisions | null |
1983-01-01 | Spin-dependent atomic collision processes have first attracted attention in the field of electron-atom scattering. Shortly after Pauli’s introduction of the concept of the electron spin in quantum mechanics Mott^1) developed the theory of production and detection of spin-polarized electrons by including spin-orbit inte... | Spin Effects in Atomic Collision Processes | null |
1983-01-01 | Electron impact studies, both theoretical and experimental, have played an important part in our understanding in the field of atomic physics. The electron provides a useful probe into the region of the electron cloud surrounding the atom. Amongst the most notable examples in electron collision studies which can be tho... | Electron-Photon Correlation Studies of Spin Exchange, Spin Orbit and Quantum Beats | null |
1983-01-01 | In magnetic insulators the magnetic moments are associated with localized electrons which interact magnetically through the mechanism of superexchange. In the case of normal rare-earth metals, of integral valence, a rather similar situation exists. However now the magnetic interaction between the localized 4f electrons... | Phase Transitions in Itinerant Electron Magnets | null |
1983-01-01 | The homogeneity of amorphous materials is a gauge symmetry, and the only structural constituents of topological disorder in elastic continua are odd lines or 2π disclinations. A model free energy for glass is constructed from this geometrical framework. It is a minimally coupled, YANG-MILLS free energy with SO(3) gauge... | Gauge Theory of Glass | null |
1983-01-01 | The three factors determining the nuclear shielding of any atom are introduced and their relative importance discussed. The dependence of shiftability on the inverse cube radius <l/r^3> for valence shell electrons is identified for Group III atoms. The deshielding effects of ligand substitution and their correlation wi... | Group III Atom NMR Spectroscopy | null |
1983-01-01 | The outcomes of asteroidal catastrophic collisions are strongly affected by the target asteroid’s gravity, since only the fragments escaping with initial velocities higher than the target’s escape velocity are not reaccumulated into “rubble pile” remnants. This idea can be compared with the observational evidence on th... | Collisional Origin of Asteroid Families: Effects of the Target’s Gravity | null |
1983-01-01 | As mentioned in the preface, online, trillion-bit database systems have been coming into existence. For such large systems, storing all information on disks would be very expensive, while storing on tapes would mean very slow access time. In practice, a two-level storage system is used. All records of the system are pe... | Two-Dimensional Storage | null |
1982-12-01 | The results of shell model calculations are presented and these support the experimental angular momentum assignments made for the high spin states in^94Ru and^95Rh. Only one disagreement between theory and experiment is encountered and this concerns the depopulation of the yrast 9^− state in^94Ru. A highly inhibited E... | High spin states in^94Ru and^95Rh | null |
1982-12-01 | In (α, xn ) and (^12C, 5 n ) in-beam γ -ray experiments with pulsed beams the decay of the 560 ns high-spin isomer in^147Gd has been investigated. Extensive coincidence measurements identified in the isomeric decay more than eighty γ -rays which almost all were placed in the level scheme. Of crucial importance for esta... | The decay of the 560 ns Isomer at 8.6 MeV in
_64
^147
Gd_83
| null |
1982-06-01 | Impact excitation of Hg atoms (6^1 S _0→6^3 P _1) by polarized electrons from a GaAs source has been studied by measuring the polarization of light emitted by the excited 6^3 P _1 state. The polarization of light which is related to recently introduced integrated state multipoles for 6^1 S _0→6^3 P _1 excitation depend... | Observation of integrated state multipoles in collisional excitation of Hg atoms by polarized electrons | null |
1982-04-01 | The phase transition temperature T _ c , the specific heat discontinuity Δ C , and the critical magnetic field of a superconductor containing intermediate valence impurities are calculated. The impurities are described by the Anderson model with orbital degeneracy in the U → ∞ limit when two active ionic configurations... | Effect of mixed valence impurities on superconductivity | null |
1982-03-01 | The spin orbit splitting of the molecular ground state of two atoms A (^2 P _1/2, 3/2) and B (^1 S _0) is discussed. If the spin orbit matrix elements do not depend on the internuclear distance, it is sufficient to know any two of the three potentials of the ground state manifold. The third can then be calculated analy... | On the spin-orbit splitting of the rare gas-monohalide molecular ground state | null |
1982-03-01 | Measurements of the spin polarization of photoelectrons in the autoionization region of the Hg 6 s ^2-subshell using circularly polarized synchrotron radiation and using unpolarized light from rare gas discharge lamps are reported. The results obtained show a pronounced structure across the resonances. Together with da... | Analysis of autoionization resonances in the Hg 6s
^2-photoionization by measurements of photoelectron polarization | null |
1982-03-01 | Electron spin resonance (ESR) spectra of frozen aqueous solutions of NO · haem · base complexes and NO · haem intercalated into dodecyl sulfate micelles have been measured at 77 K and analyzed for the hyperfine components of ^15NO,^14N-base, ^14N-pyrroles and ^57Fe which coincide with the principal directions of the g ... | Electron spin resonance spectra of penta- and hexacoordinated nitrosyl iron protoporphyrin IX complexes | null |
1982-01-01 | The problem of magnetic superconductors is a long standing one [9.1,2]. After the BCS theory was formulated in which electrons are paired with opposite spins and momenta, it was realized that this kind of electron correlation is in conflict with ferromagnetic order since the latter requires an electron-spin polarizatio... | Theory of Magnetic Superconductors | null |
1982-01-01 | Chemisorptive properties of simple gases on transition metal clusters are shown to be closely related to their electronic properties. These properties depend on the size and roughness of the cluster. Striking modification of the electronic properties from the bulk appear for atomic sites having a low coordination numbe... | Chemisorptive Properties of Transition Metal Clusters | null |
1982-01-01 | Summary of the Wigner-Racah algebra of non-simply-reducible point groups with non-ambivalent classes | null | |
1982-01-01 | Lattice gauge theory | null | |
1982-01-01 | The Shubnikov-de Haas (ShdH) oscillations of the transverse magnetoresistance in the: n-type Pb_1−xMn_xTe mixed crystals (x = 0.02 and x = 0.04), have been investigated. The theory of magnetic energy levels including the exchange interaction has been developed and compared with experimental results. The exchange parame... | The quantum transport and the magnetic levels in Pb_1−xMn_xTe | null |
1982-01-01 | Over the past twenty years the realization has become more and more wide spread that our understanding of chemical bonding and chemical reactions is based upon the electron density or the one-electron density matrix. This extends beyond the mere interpretation of the phenomena and the provision of a theoretical framewo... | Concepts of Charge Density Analysis: The Theoretical Approach | null |
1981-12-01 | We present a calculation for the bulk magnon contribution to the electrical resistivity of ferromagnetic metals in the presence of domains at low temperatures (1–4 K). The case of a 180° Bloch wall separating domains is considered and the proper wave functions and dispersion relations are taken for bulk magnons. Severa... | Domain structure effects in the temperature-dependent resistivity of ferromagnetic metals | null |
1981-09-01 | In leghemoglobin a, which is the major hemoglobin component in soybean root nodules, the haem iron has been replaced by cobalt. The electron spin resonance (ESR) of frozen solutions of the cobalt-substituted leghemoglobin has been studied at 77 K in the deoxy and oxy forms respectively. Both ligation states exhibit rho... | pH Dependence of oxy and deoxy cobalt-substituted leghemoglobin from soybean | null |
1981-06-01 | High spin states in^108Sn have been investigated using the^92Mo(^19F, p 2 nγ )^108Sn reaction. In-beam measurements of γ - γ -coincidences, γ -ray excitation functions and γ -ray angular distributions were performed with Ge(Li)-detectors, one of which had a Nal Compton suppression shield. A level scheme for^108Sn has b... | High-spin states in^108Sn | null |
1981-06-01 | The g -factor of the J ^π=21/2^+ isomeric state in^111In ( T _1/2=13.3 ns) and of the J ^π=6^+ isomeric state in^112Sn ( T _1/2=13.7 ns) were measured using the spin rotation method. The result obtained for the J ^π=21/2^+ level in^111In, g =+0.47 (2), indicates that this state has an almost pure (( πg _9/2)^−1 νg _7/2... | Nuclearg-factors of theJ
^π=21/2^+isomer in^112In and theJ
^π=6^+
^112Sn | null |
1981-06-01 | Electronic spectra and electron spin resonance of tetragonal copper(II)N-alkyl imidazole compounds | null | |
1981-01-01 | The range of radicals in matrices studied by this technique is so great that a Review of this length must be extremely selective. Since various aspects of electronic structure revealed by e.s.r. spectra were considered in the preceding Review (1), and have been extensively discussed elsewhere (1–3), I consider primaril... | Matrix Effects Studied by Electron Spin Resonance Spectroscopy | null |
1981-01-01 | Most of the emphasis at this meeting has been on the elementary interaction of kaons (K^±, K°_L) with nucleons. I would like to shift the emphasis for a moment to a discussion of possibilities for the study of nuclear and hypernuclear structure physics with kaon beams (1–4). With the availability of K^+ and K^− beams (... | Kaon-Nucleus Interactions | null |
1981-01-01 | It has been shown that Dirac equation employing a constant value of the screening constant Z_0 does not explain the variation of spin-orbit splittings of 2p and 3p levels with atomic number Z. A model which takes into account the variation of Z_0 with Z is shown to satisfactorily predict the dependence of spinorbit spl... | Nature of dependence of spin-orbit splittings on atomic number | null |
1981-01-01 | Unique parity levels in odd mass heavy nuclei arise, in each shell, from that isolated orbit lying amidst others of opposite parity. Their effective isolation leads to high purity and therefore such states offer an ideal testing ground for nuclear models. | Unique Parity States in ^109Pd as a Test of Particle-Rotor and IBFA Models | null |
1981-01-01 | A matrix formalism for polarization calculation, as well as its comparison with other methods, is briefly discussed. The prediction for SPEAR is compared with experimental measurements. An estimate is offered for the transverse polarization for PEP. Various schemes for obtaining the longitudial polarization in PEP are ... | Problems in Obtaining Polarized e^+ and e^- Beams and Perspectives for PEP | null |
1981-01-01 | EPR measurements on frozen solutions of a wide range of phosphine or phosphite adducts of Co^II Schiff base complexes have given well resolved spectra exhibiting cobalt and phosphorus hyperfine structure. From analysis of the ^31P hyperfine tensor, the R-P-R bond angle can be deduced in the phosphine or phosphite, PR_3... | Use of Electron Paramagnetic Resonance Spectroscopy to Study the Interaction Between Cobalt Schiff Base Complexes and Phosphines or Phosphites in Solution | null |
1981-01-01 | The Ariel V Sky Survey Instrument (SSI) was a set of collimated proportional counters which viewed the sky from the side of the spin-stabilized satellite and had a field of view 0^°.75 × 10^°.6 (FWHM) with the long axis inclined at 65^° to the spin plane. The SSI thus scanned great circles on the sky. The time resoluti... | The Ariel V Sky Survey of Fast-Transient X-Ray Outbursts | null |
1981-01-01 | The concept of the four-atom Jahn-Teller resonance molecule. in transition metals is described, and its origin in the study of the Vb hydrides is retraced. The concept is schematically related to the theory of resonance localization of magnetic impurities. A model study that demonstrates plausibility and suggests gener... | Hydrogen in V, Nb, and Ta: Magnetism in Fe, Co, and Ni | null |
1981-01-01 | The captures of target electrons into excited states of the projectile are investigated for projectile velocities v>vBohr and grazing incidence. The polarization of the subsequently emitted light is determined by evaluating the Stokes’s parameters. The contribution of electron capture from localized target-electron sta... |
LYα Polarization After Electron Capture in Ion-Surface Interaction | null |
1981-01-01 | The measurement of G-2 for the muon | null | |
1981-01-01 | In this paper we will review recent work on II-VI compounds containing Mn: Hg_1-X Mn_XTe, Hg_1-XMn_XSe, Cd{1-XMn_XTe, Cd_1-XMn_XSe. From many points of view these materials, called semimagnetic semiconductors (SMSC), are very similar to the well-knlwn systems such as Hg_1-XCd_1-XTe and Cd_1-XZn_XTe. In particular, over... | Semimagnetic Semiconductors in Magnetic Fields | null |
1980-12-01 | The paper reports synthesis and physical characterisation of a new iron(III) porphyrin which shows unusual features of quantum mechanically mixed ground state in its magnetic properties. Magnetic susceptibility (300−3·6 K) and Mössbauer spectroscopy (300−77 K) studies of the compound are described and discussed with re... | An example of an iron (III) porphyrin with spin mixed ground state | null |
1980-12-01 | Electron spin resonance studies have been carried out on N -ethylimidazole and N -propylimidazole 4 : 1 complexes of CuX_2 salts (X = ClO _4 ^− , NO _3 ^− , , Br^− or Cl^−) in their polycrystalline and undiluted form at 295 K and 77 K. Cupric ion hyperfine structural resolution is observed for all the complexes at 295 ... | Electron spin resonance and electronic spectral investigation on square planar copper(II) complexes ofN-ethyl- andN-propylimidazole | null |
1980-07-01 | Equations of motion for particles of arbitrary spin invariant under the Galileo group | null | |
1980-04-01 | General forms valid for terms of any type and multiplicity in diatomic molecules are obtained for the first and second correction terms of centrifugal distortions of the spin-orbit, spin-spin and spin-rotation interactions. | General form of the centrifugal corrections of the spin interactions in diatomic molecules | null |
1980-01-01 | The earliest tempestuous years of E lectron S pin R esonance spectroscopy^1,2 — comprising development of the method, commercial production of high-resolution spectrometers complemented by the ENDOR technique and measurement of the hyperfine structures of thousands of radicals — should now be superseded by a time of re... | Novel Radical Ions: Generation and Properties. An Interim Report on PES and ESR Investigations by the Frankfurt Group | null |
1980-01-01 | A theoretical summary is given so that the observables that are needed for a description of the continuum electrons in spin-dependent inelastic electron-atom scattering can be calculated. Experimental aspects of electron polarization and coincidence photon polarization measurements are discussed. An outline of experime... | Spin-Dependent Inelastic Electron-Atom Scattering | null |
1980-01-01 | In this chapter we shall treat only the theory of transition metals and their complexes. Much of the material is directly applicable to organic free radicals or triplet state molecules except that the spin-orbit interaction is less important for s and p electrons. The treatment for rare earth metals is similar in princ... | Theory of Electron Spin Resonance | null |
1980-01-01 | It is well known from experiments that when two metal ions are sufficiently close to each other in a molecule, the magnetic properties of the couple can differ appreciably from the sum of the properties of the two individual ions. This can be observed by magnetic susceptibility measurements, ESR and NMR spectroscopy, h... | ESR and NMR Spectra of Exchange Coupled Metal Ions | null |
1980-01-01 | In the cross section expression for polarized neutrons: 1 $$N{(\vec H)^2} + 2N(\vec H)\vec P.\vec F(\vec H) + \vec F{(\vec H)^2}$$ | Interpretation of Magnetization Densities | null |
1980-01-01 | Metal-ligand bonding in 3d sandwich complexes | null | |
1980-01-01 | Magnetooptical properties of IV–VI compounds | null | |
1980-01-01 | A system consisting of a nucleus of charge +Ze and n electrons (1, 2,…, i , j , … , n ) will be chosen as a model. Two types of interactions occur: mutual repulsion of the electrons and attraction between the nucleus and the electrons. The expression for the potential energy of the i -th electron assumes the form 8-1 $... | Many-Electron Atoms | null |
1980-01-01 | It has been shown that an unpaired electron in a magnetic field has its energy levels split into two levels : $${{\rm{E}}_{{\rm{o }}}}{\rm{ + 1/2 g }}{{\rm{\beta }}_{{\rm{o}}}}{\rm{H}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{{\rm{E}... | Hyperfine, Superhyperfine, Fine Structures | null |
1980-01-01 | The photoelectrons emitted by unpolarized lead atoms exposed to unpolarized vuv radiation are spin polarized. An angular distribution experiment has been performed for two angles: the light beam (spectrum between 145 nm and the photoionization threshold at 167 nm) produced by means of a H_2 discharge lamp is placed at ... | Spin-Polarized Photoelectrons from Unpolarized Lead Atoms Exposed to Unpolarized Radiation | null |
1980-01-01 | Global symmetries of spin systems defined on abelian manifolds | null | |
1980-01-01 | In the 1960s, interest in the chemistry of nitroxides heightened, owing largely to the expanding scope of their possible practical and theoretical applications. By now the nitroxides have become a self-contained class of organic compounds, holding a place of their own in chemistry. | Stable Imidazoline Nitroxides | null |
1980-01-01 | Transition elements appear in glass and ceramics in several oxidation states, which depend on composition, temperature and atmosphere. Structure and properties of these elements depend on the oxidation states. Investigations have shown that borosilicate glasses, which contain fission products and are melted in an oxidi... | An Investigation on the Valency State of Molybdenum in Glasses with and without Fission Products | null |
1980-01-01 | For an unpolarised neutron beam the diffracted intensities are proportional to the sum of the squares of the structure factors $$I\left( {\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{k}}\right)\propto{{F}_{N}}{{(\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{k})}^{2}}+F_{M}^{{\underset{\raise0... | The Measurement of Magnetic Structure Factors | null |
1980-01-01 | The novel features of kaons, combined with state-of-the-art advances in experimental capabilities, has stimulated growing interest and research activity (1–9) in kaon-nucleus phenomena. Although “kaon factories” have not yet emerged, “kaon shops”, such as the Brookhaven AGS accelerator, are producing data (9) and sever... | K^+-Nucleus Inelastic and Charge Exchange Reactions | null |
1979-12-01 | Principles of the radical pair mechanism of chemically induced nuclear and electron spin polarization | null |
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