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A novel method to measure the isotope shifts and hyperfine splittings of all ytterbium isotopes for a 399-nm transition

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Chinese Physics B 2010年第12期19卷 174-180页

作者：王文丽徐信业 State Key Laboratory of Precision Spectroscopy and Department of Physics East China Normal University

We report the experimental results on measuring the isotope shifts and hyperfine splittings of all ytterbium isotopes for a 399-nm transition by using a quite simple and novel method. It benefits from the advantages of the modulation transfer spectroscopy in an ytterbium hollow cathode lamp and the Doppler-free spectroscopy in a collimated ytterbium atomic beam. The key technique in this experiment is simultaneously measuring the frequency separations of the two spectra twice, and the separation difference between two measurements is solely determined by the well-defined frequency of an acousto-optics modulator. Compared with the most of previously reported experimental results, ours are more accurate and completed, which will provide the useful information for developing a more accurate theoretical model to describe the interaction inside an ytterbium atom.

关键词： isotope shift hyperfine splitting modulation transfer spectroscopy ytterbium

Theoretical calculations of hyperfine splitting,Zeeman shifts,and isotope shifts of^(27)Al^(+)and logical ions in Al^(+)clocks

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Chinese Physics B 2021年第12期30卷 361-369页

作者： Xiao-Kang Tang Xiang Zhang Yong Shen Hong-Xin Zou College of Liberal Arts and Sciences National University of Defense TechnologyChangsha 410073China

Based on the multiconfiguration Dirac-Hartree-Fock(MCDHF)method,similar models are employed to simultaneously calculate the first-order and second-order Zeeman coefficients as well as the hyperfine interaction constants of the related energy levels of ^(27)Al^(+)and its logical ions ^(9)Be^(+)and^(25)Mg^(+)in the^(27)Al^(+)optical *** less than 0.34%deviations from experimental values in Zeeman coefficients of^(27)Al^(+),these calculated parameters will be of great help for better evaluation of the systematic *** also calculate the isotope shift parameters of the related energy levels,which could extend our knowledge and understanding of nuclear properties of these ions.

关键词： Zeeman effect isotope shift aluminum ion optical clock MCDHF method

Measurements of hyperfine structure and shift for atomic uranium by laser induced-fluorescence spectroscopy

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Chinese Journal of Lasers 1992年第5期 27-31页

作者： Penfei Yan, Wanxiang Luo, Junjie Zhang, Ling Wang (Research Institute of Physical and Chemical Engineering of Nuclear Industry,Tianjing 300180,China)

The paper reports that the isotope shift between natural uranium isotope 235and 238 and the hyperfine sturcture width width of U235were measured by means of laser-in-duced fluorescence *** A and B hyperfine structure ... 详细信息

关键词： laser-induced fluorescence isotope shift hyperf ine structure natural uranium

Commissioning of a high-resolution collinear laser spectroscopy apparatus with a laser ablation ion source

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Nuclear Science and Techniques 2022年第1期33卷 98-106页

作者： Shi-Wei Bai Xiao-Fei Yang Shu-Jing Wang Yong-Chao Liu Peng Zhang Yin-Shen Liu Han-Rui Hu Yang-Fan Guo Jin Wang Ze-Yu Du Zhou Yan Yun-Kai Zhang Yan-Lin Ye Qi-Te Li Yu-Cheng Ge Chuang-Ye He School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China China Institute of Atomic Energy(CIAE) P.O.Box 275(10)Beijing 102413China

Collinear laser spectroscopy is a powerful tool for studying the nuclear spins,electromagnetic moments,and charge radii of exotic *** study the nuclear properties of unstable nuclei at the Beijing Radioactive Ion-beam Facility(BRIF)and the future High Intensity Heavy-ion Accelerator Facility(HIAF),we developed a collinear laser spectroscopy apparatus integrated with an offline laser ablation ion source and a laser *** overall performance of this state-of-the-art technique was evaluated,and the system was commissioned using a bunched stable ion *** high-resolution optical spectra for the 4s ^(2)S_(1/2)→4p^(2)P_(3/2)(D2)ionic transition of ^(40;42;44;48)Ca isotopes were successfully *** extracted isotope shifts relative to ^(40)Ca showed excellent agreement with the literature *** system is now ready for use at radioactive ion beam facilities such as the BRIF and paves the way for the further development of higher-sensitivity collinear resonance ionization spectroscopy techniques.

关键词： Nuclear properties Collinear laser spectroscopy Laser-ablation ion source Photon detection isotope shift