Spin–orbit distortion of the hyperfine structure in heavier molecules: Breakdown of the case (aβ) formalism in the B 3Φ–X 3Δ system of gaseous NbN

1989 ◽  
Vol 91 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Y. Azuma ◽  
J. A. Barry ◽  
M. P. J. Lyne ◽  
A. J. Merer ◽  
J. O. Schröder ◽  
...  
Keyword(s):  
Hyperfine Structure ◽  
Spin Orbit

The (5d10 + 5d96s) – 5d96p transitions in Tl IV, Pb V, and Bi VI

1990 ◽  
Vol 68 (3) ◽  
pp. 284-292 ◽  
Author(s):  
Y. N. Joshi ◽  
A. J. J. Raassen ◽  
A. A. Van der Valk
Keyword(s):  
Least Squares ◽  
Hyperfine Structure ◽  
Interaction Parameter ◽  
Magnetic Interaction ◽  
Spin Orbit ◽  
Magnetic Effects ◽  
Magnetic Interaction Parameter

The spectra of thallium, lead, and bismuth were photographed in the region 600–2000 Å using sliding spark and triggered spark sources. The (5d10 + 5d96s)–5d96p transitions in Tl IV, Pb V, and Bi VI were investigated. Earlier level values were revised and new lines were classified. Hyperfine structure splittings were observed for many lines in Tl IV and Bi VI. Least squares fitted calculations were done for each spectra. The deviations between the calculated and observed level values showed that parametric descriptions using only the spin-orbit magnetic interaction parameter to describe magnetic effects is not sufficient in the 5d-shell spectra.

Theoretical Studies of the EPR g Factors and the Hyperfine Structure Constants of Cr3+ in MgS and SrS

2003 ◽  
Vol 58 (9-10) ◽  
pp. 503-506
Author(s):  
Shao-Yi Wu ◽  
Xiu-Ying Gao ◽  
Wei-Zi Yan
Keyword(s):  
Hyperfine Structure ◽  
Coupling Coefficient ◽  
Structure Constant ◽  
Theoretical Studies ◽  
Spin Orbit ◽  
Cluster Approach ◽  
Hyperfine Structure Constant ◽  
Structure Constants ◽  
G Factors

The EPR g factors and the hyperfine structure constant A factors for Cr3+ in MgS and SrS are theoretically studied by using the two-spin-orbit (S.O.)-coupling-coefficient formulas for a 3d3 ion in octahedra based on the cluster approach. In these formulas, both the contributions due to the S.O. coupling coefficient of the central 3d3 ion and that of ligands are taken into account. Based on these studies, the g and A factors of Cr3+ in both MgS and SrS are satisfactorily explained. The results are discussed.

Hyperfine Structure of Deuterium and Nucleon-Nucleon Spin-Orbit Potentials

1958 ◽  
Vol 110 (4) ◽  
pp. 995-996 ◽  
Author(s):  
A. M. Sessler ◽  
H. M. Foley
Keyword(s):  
Hyperfine Structure ◽  
Nucleon Nucleon ◽  
Nucleon Spin ◽  
Spin Orbit

Hyperfine structure in the ground state of the stable isotopes of europium

1960 ◽  
Vol 257 (1289) ◽  
pp. 269-276 ◽  
Keyword(s):  
Stable Isotopes ◽  
Magnetic Resonance ◽  
Hyperfine Structure ◽  
Ground State ◽  
Atomic Beam ◽  
Theoretical Work ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Structure Constants

The hyperfine structure of the ground state 4 f 7 6 s 2 8 S 7/2 of 151 Eu and 153 Eu has been measured by the method of magnetic resonance in an atomic beam. The sign of the hyperfine structure and the value of g J have also been measured. The results are: g J = 1·9935 ± 0·0003; A (151) = -20·0523 ± 0·0002 Mc/s, A (153) = -8·8532 ± 0·0002 Mc/s, B (151) = - 0·7012 ± 0·0035 Mc/s, B (153) = - 1·7852 ± 0·0035 Mc/s; A (151)/ A (153) = 2·26498 ± 0·00008, B (151)/ B (153) = 0·393 + 0·003. These results disagree with the values expected for the pure 8 S 7/2 state formed from a half-filled shell of f -electrons. Calculations on the basis of admixture of higher states of the configuration by spin-orbit coupling account for the discrepancy in g J but do not explain the values of the hyperfine structure constants A and B . Further theoretical work is in progress.

Nuclear-mass dependent spin-orbit interaction

1991 ◽  
Vol 69 (2) ◽  
pp. 161-163
Author(s):  
T. L. Sordo ◽  
J. A. Sordo ◽  
S. Fraga
Keyword(s):  
Hyperfine Structure ◽  
Ground States ◽  
Orbit Interaction ◽  
Spin Orbit ◽  
Matrix Elements ◽  
Nuclear Mass ◽  
Tensor Form ◽  
Interaction Operator ◽  
Spin Orbit Interaction ◽  
Mass Dependent

The nuclear-mass dependent spin-orbit interaction is discussed. The corresponding interaction operator is given in tensor form and the expression for its matrix elements in a basis of SL functions is presented. Monoconfigurational calculations have been performed for the ground states of carbon and oxygen. The results for the J-level splittings show that the contribution from this interaction is comparable with, or even greater than, the contribution from the hyperfine-structure interactions.

Electron resonance of gaseous diatomic hydrides II. Rotational constant, Λ-doubling, hyperfine structure and dipole moment of SeH and SeD

1970 ◽  
Vol 315 (1522) ◽  
pp. 355-368 ◽  
Keyword(s):  
Magnetic Field ◽  
Dipole Moment ◽  
Hyperfine Structure ◽  
Hyperfine Coupling ◽  
Rotational Level ◽  
Rotational Constant ◽  
Coupling Constants ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Electron Resonance

The electron resonance spectra of the J = 3/2 and J = 5/2 rotational levels of the 2 II 3/2 state of SeH and the J = 3/2 rotational level of the 2 II 3/2 state of SeD are described. Values of the rotational constant and Λ-doubling parameters are determined. Evidence is found for a tensorial interaction of the spin and magnetic field, arising from the gauge invariance requirement of the spin-orbit coupling Hamiltonian. Hyperfine structure from 77 Se is observed, and the hyperfine coupling constants are determined. The effect of an electric field on the spectra is analysed and the electric dipole moment determined.

The Quadrupole Moments of the Stable Nuclei of Sulphur and Chlorine

1986 ◽  
Vol 41 (1-2) ◽  
pp. 15-18 ◽  
Author(s):  
M. Elbel ◽  
R. Quad
Keyword(s):  
Hyperfine Structure ◽  
Laser Spectroscopy ◽  
Coupling Constants ◽  
Orbit Coupling ◽  
Collinear Laser Spectroscopy ◽  
Spin Orbit Coupling ◽  
Quadrupole Moments ◽  
Spin Orbit ◽  
Hyperfine Constants ◽  
Free Ion

By means of collinear laser spectroscopy the hyperfine structure of two transitions in the ionic spectra of sulphur and chlorine has been measured. The hyperfine constants of the involved levels have been determined. From them and by means of the spin-orbit coupling constants of the involved p-electrons the quadrupole moments of 33S, 35Cl and 37Cl could be determined anew. The importance of the new values is seen in the fact that in the case of sulphur they result from measurements at the free ion or, in the case of chlorine, that they result from an electron other than 3 p.

The NaK 1(b)ΠΩ=03 state hyperfine structure and the 1(b)ΠΩ=03∼2(A)Σ+1 spin–orbit interaction

2005 ◽  
Vol 122 (7) ◽  
pp. 074306 ◽  
Author(s):  
P. Burns ◽  
A. D. Wilkins ◽  
A. P. Hickman ◽  
J. Huennekens
Keyword(s):  
Hyperfine Structure ◽  
Orbit Interaction ◽  
Spin Orbit ◽  
Spin Orbit Interaction

Investigations on the spin Hamiltonian parameters of Cu(2) site in (Tl0.5Pb0.5)Sr2CaCu2O7 superconductors

2015 ◽  
Vol 29 (25n26) ◽  
pp. 1542018
Author(s):  
Xian-Fen Hu ◽  
Shao-Yi Wu ◽  
Zhi-Hong Zhang ◽  
Min-Quan Kuang
Keyword(s):  
Hyperfine Structure ◽  
Ground State ◽  
Reduction Factor ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Spin Hamiltonian ◽  
Core Polarization ◽  
Ligand Orbital ◽  
Structure Constants ◽  
Hamiltonian Parameters

The spin Hamiltonian parameters ([Formula: see text] factors and hyperfine structure constants) of the five-fold coordinated Cu(2) site in [Formula: see text] superconductors are investigated from the high order perturbation formulas of these parameters for a [Formula: see text] ion in tetragonally elongated octahedron. The observed anisotropies [Formula: see text] and [Formula: see text] are ascribed to the [Formula: see text] ground state for [Formula: see text] under octahedral tetragonal elongation distortion. The comparable magnitudes of the parallel and perpendicular hyperfine structure constants may be illustrated by the small core polarization constant and the reduction factor [Formula: see text]. The ligand orbital and spin–orbit coupling contributions are found to be important due to significant covalency and should be considered in the calculations.

Sign in / Sign up

Export Citation Format

Share Document