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- Title
Experimental determination of the field shift factor and the mass shift coefficient for the <sup>1</sup>S<sub>0</sub>-<sup>3</sup>P<sub>1</sub> spin-forbidden transition at 791 nm in neutral barium.
- Authors
Yu, Geng-Hua; Yan, Hui; Zhong, Jia-Qi; Liu, Hong; Zhu, Xiao-Ling; Yang, Wei
- Abstract
The experimental measurements of the isotope shifts (ISs) for the 1S0-3P1 spin-forbidden transition at 791 nm in neutral barium have been carried out with a thermal barium atom beam. The hyperfine structure (HFS) constants a and b of the odd isotopes Ba and Ba for this transition have been extracted from the experimental results: a(Ba) = 1149.9(1.0) MHz, b(Ba)= −41.6(0.5) MHz, a(Ba) = 1028.0(1.0) MHz, b(Ba) = −27.5(0.5) MHz. The measured IS results with the reference isotope Ba are 183.7(1.0) MHz (Ba-Ba), 108.5(0.3) MHz (Ba-Ba) and 218.9(1.0) MHz (Ba-Ba). Our IS measurements are in good agreement with the previous experiments. The field shift (FS) factor and the mass shift (MS) coefficient for this spin-forbidden transition have be determined experimentally as −3.19(4) GHz ⋅ fm and −242(20) GHz ⋅ amu, respectively. The results provided herein could be used for further checks theoretically and experimentally, and could also contribute to the study on the nuclear structure of the barium isotopic nuclei.
- Subjects
ELECTROMAGNETIC mass shift; SPIN crossover; BARIUM; ISOTOPE shift; FORBIDDEN transitions (Quantum mechanics); COEFFICIENTS (Statistics)
- Publication
Modern Physics Letters B, 2018, Vol 32, Issue 1, p-1
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S0217984917503596