Measurement of hyperfine structure constants, $g$ values and tensor polarizability of excited states of Sm I

1997 ◽  
Vol 39 (3) ◽  
pp. 209-216 ◽  
Author(s):  
T. Kobayashi ◽  
I. Endo ◽  
A. Fukumi ◽  
T. Horiguchi ◽  
Y. Ishida ◽  
...  
Keyword(s):  
Hyperfine Structure ◽  
Excited States ◽  
Tensor Polarizability ◽  
Structure Constants

Level-crossing-Experimente in angeregten Termen des Lu I zur Untersuchung der Hyperfeinstruktur von 175 Lu / Hyperfine Structure Investigations of Excited States of Lu I by Means of the Level-crossing Method

1970 ◽  
Vol 25 (5) ◽  
pp. 611-620 ◽  
Author(s):  
L. H. Göbel
Keyword(s):  
Hyperfine Structure ◽  
Excited States ◽  
Electronic States ◽  
Resonance Scattering ◽  
Isotopic Abundance ◽  
Level Crossing ◽  
Natural Isotopic Abundance ◽  
Fabry Perot ◽  
Structure Constants ◽  
Structure Investigations

The magnetic dipol and the electric quadrupol interaction constants in the excited electronic states 5d6s6p (1D) 2D3/2 and 5d6s6p (1D) 2F5/2 of 175Lu I in natural isotopic abundance were investigated. The measurement was performed by resonance scattering of light with wavelengths λ = 4518.57 Å and λ = 3567.84 Å on a lutetium atomic beam. The following hyperfine structure constants were obtained:B/A{(1D) 2D3/2} = +0.34704(80) ; A{(1D) 2D3/2} =-1313.34(50) gJ/0.80 MHz; B{(1D) 2D3/2} =- 455.8(1.2) gJ/0.80 MHz; B/A{(1D) 2F5/2} = +9.7883(37) ; A{(1D) 2F5/2} =+ 351.864(56) gJ MHz; B{(1D) 2F5/2} = + 3444.2 (1.9) gJ MHz.The signs of the interaction constants were determined by examinations of these lines in a Fabry- Perot-interferometer. The lifetimes of the investigated states were found as follows:τ{(1D) 2D3/2} = (4.9 ± 0.1) · 10-8 s; τ{(1D) 2F5/2) = (1.2 ± 0.1) · 10-8 s.From these the oscillatorstrengths were deduced:ƒ(3567.8 Å) = (1.7 + 0.2) · 10-1; ƒ(3841.2 Å) = (5.6 + 0.8) · 10-2;ƒ(4518.6 Å) = (6.3 ± 0.1) · 10-2; ƒ(4967.5 Å) < 3 · 10-4.

Isotope shift and hyperfine structure in the atomic spectrum of tin

1973 ◽  
Vol 332 (1588) ◽  
pp. 129-138 ◽  
Keyword(s):  
Stable Isotopes ◽  
Hyperfine Structure ◽  
Nuclear Charge ◽  
Light Sources ◽  
Atomic Spectrum ◽  
Nuclear Charge Distribution ◽  
Fabry Perot ◽  
Self Consistent ◽  
Structure Constants ◽  
Good Agreement

Three lines in the atomic spectrum of tin, λ 3262 Å, λ 3283 Å and λ 6454Å have been studied in emission under high resolution with the use of light sources containing enriched isotopic samples. Results are reported for isotope shifts in these lines for the abundant stable isotopes ( A ≽ 116). Pressure-scanned Fabry–Perot etalons provided the necessary resolution; the spectrograms for λ 6454 Å were recorded and analysed by digital techniques, and for this line hyperfine structure constants required in the interpretation of the data were also evaluated. The results for the three lines are not in good agreement with earlier work, but are shown to be self-consistent by means of a King plot. Their interpretation in terms of the nuclear charge distribution is considered in the following paper.

Electronic Structure and Hyperfine Structure Constants of NO Molecule

1960 ◽  
Vol 33 (3) ◽  
pp. 878-881 ◽  
Author(s):  
Chun C. Lin ◽  
Katsunori Hijikata ◽  
Michiko Sakamoto
Keyword(s):  
Electronic Structure ◽  
Hyperfine Structure ◽  
Structure Constants

Investigation of the Spin Hamiltonian Parameters of Yb3+ in CaWO4 Crystal

2004 ◽  
Vol 59 (12) ◽  
pp. 943-946 ◽  
Author(s):  
Hui-Ning Dong ◽  
Shao-Yi Wu
Keyword(s):  
Hyperfine Structure ◽  
Local Structure ◽  
Reasonable Agreement ◽  
Second Order ◽  
Order Perturbation ◽  
Superposition Model ◽  
Spin Hamiltonian ◽  
Structure Constants ◽  
Hamiltonian Parameters ◽  
G Factors

In this paper, the spin Hamiltonian parameters g factors g∥ and g⊥ of Yb3+ and hyperfine structure constants A∥ and A⊥ of 171Yb3+ and 173Yb3+ in CaWO4 crystal are calculated from the two-order perturbation formulae. In these formulae, the contributions of the covalence effects, the admixture between J =7/2 and J =5/2 states as well as the second-order perturbation are included. The needed crystal parameters are obtained from the superposition model and the local structure of the studied system. The calculated results are in reasonable agreement with the observed values. The results are discussed.

Lifetime and hyperfine structure constants of the state in41K

1985 ◽  
Vol 110 (4) ◽  
pp. 203-205 ◽  
Author(s):  
M. Głódź ◽  
M. Kraińska-Miszczak
Keyword(s):  
Hyperfine Structure ◽  
The State ◽  
Structure Constants

STUDIES OF THE SPIN-HAMILTONIAN PARAMETERS AND OPTICAL SPECTRUM BAND POSITIONS FOR THE Yb3+ ION IN Tm3Al5O12 CRYSTALS

2009 ◽  
Vol 23 (20n21) ◽  
pp. 2457-2462 ◽  
Author(s):  
HONG-GANG LIU ◽  
WEN-CHEN ZHENG ◽  
WEN-LIN FENG ◽  
WEI-QING YANG
Keyword(s):  
Hyperfine Interaction ◽  
Hyperfine Structure ◽  
Matrix Method ◽  
Optical Spectrum ◽  
Spin Hamiltonian ◽  
Energy Matrix ◽  
Interaction Terms ◽  
Structure Constants ◽  
Spectrum Band ◽  
Hamiltonian Parameters

The spin-Hamiltonian parameters (g factors gi and hyperfine structure constants Ai, where i = x, y, z) and optical spectrum band positions of the Yb 3+ ion in the rhombically-distorted Tm 3+ site of Tm 3 Al 5 O 12 garnet crystal are calculated by a complete diagonalization (of the energy matrix) method, in which the Zeeman and hyperfine interaction terms are also included in the conventional Hamiltonian. From the calculations, the observed spin-Hamiltonian parameters of Tm 3 Al 5 O 12: Yb 3+ are explained reasonably and the optical spectrum band positions are suggested. The rationality of these suggested optical spectrum band positions is discussed by comparing them with the observed values of Yb 3+ ions in similar aluminum garnet ( Yb 3 Al 5 O 12, Y 3 Al 5 O 12 and Lu 3 Al 5 O 12) crystals.

Relaxed excited states and anomalous hyperfine structure of muonium centers in KBr

1994 ◽  
Vol 84 (1) ◽  
pp. 271-277
Author(s):  
R. Kadono ◽  
A. Matsushita ◽  
K. Nishiyama ◽  
K. Nagamine
Keyword(s):  
Hyperfine Structure ◽  
Excited States
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