Zobrazeno 1 - 10
of 62
pro vyhledávání: '"K. Rajnak"'
Publikováno v:
The Journal of Chemical Physics. 90:3443-3457
The optical spectra of the lanthanides doped into single crystal LaF3 have been interpreted in terms of transitions within 4f N configurations. Energy matrices combining free‐ion terms with a crystal field for an approximate model which assumes C2v
Autor:
L. Couture, K. Rajnak
Publikováno v:
Chemical Physics. 55:331-337
A parametric analysis of the Stark-split spectra of Nd 3+ in frozen dilute aqueous solutions of neodymium chloride has been carried out.The similarity of the spectra of Nd 3+ in frozen dilute solutions and in crystals, where the ion is nine-fold coor
Publikováno v:
Physical Review B. 28:4923-4930
Below ${T}_{c}=95$ K, ${\mathrm{U}}^{4+}$: Th${\mathrm{Br}}_{4}$ exists as an incommensurately modulated structure. The ${\mathrm{U}}^{4+}$ ions occupy a range of sites which vary from ${D}_{2d}$ to a limiting ${D}_{2}$ site. The ${D}_{2d}$ and limit
Publikováno v:
The Journal of Chemical Physics. 80:5942-5950
The U(BD4)4/Hf(BD4)4 optical spectrum reported by Bernstein and Keiderling has been reanalyzed. All 19 allowed transitions have been identified. The crystal field is ∼2.5 times as strong as that of U4+/ThBr4, but the values of the Fk and ζ paramet
Publikováno v:
Inorganic Chemistry. 27:3186-3189
Analyse des spectres optiques de Pa 4+ /ThBr 4 et M 2 PaX 6 (M=Cs,X=Cl; M=NEt 4 , X=Cl,Br) dans les domaines visible et ultraviolet en termes d'un Hamiltonien comprenant le champ cristallin et les interactions spin-orbite pour la configuration 6d
Autor:
K. Rajnak
Publikováno v:
Physical Review A. 14:1979-1988
Hartree-Fock calculations with the inclusion of a relativistic correction for more than 30 configurations of U I indicate the existence of many simple relationships between spin-orbit coupling constants and Slater integrals for different configuratio
Autor:
K. Rajnak, L. Couture
Publikováno v:
Chemical Physics. 85:315-332
We present the results of low-temperature absorption spectra of Er3+ in frozen dilute aqueous chloride solutions (0.044 M). In order to interpret these spectra we undertook a reinterpretation of the spectra of ErCl3·6H2O, which are very similar to t
Publikováno v:
The Journal of Chemical Physics. 80:5951-5962
The optical spectrum of Np(BD4)4/Zr(BD4)4 is reported and analyzed. The parameter values obtained are consistent with those for U(BD4)4/Hf(BD4)4. A total of 46 levels were fit with σ=84 cm−1. EPR data on Np(BD4)4/Zr(BD4)4 and Np(BH3CH3)4/Zr(BH3CH3
Autor:
K. Rajnak, J. C. Morrison
Publikováno v:
Physical Review A. 4:536-542
Publikováno v:
The Journal of Chemical Physics. 49:4412-4423
We have correlated the experimentally determined band intensities in the solution absorption spectra of the trivalent lanthanides with a theoretical expression derived by Judd. The spectra were measured in a single medium, dilute acid solution, and,