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

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Abstract

Collinear laser spectroscopy is a powerful tool for studying the nuclear spins, electromagnetic moments, and charge radii of exotic nuclei. To 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 system. The overall performance of this state-of-the-art technique was evaluated, and the system was commissioned using a bunched stable ion beam. The high-resolution optical spectra for the 4s \(^{2}S_{1/2}\) \(\rightarrow\) 4p \(^{2}P_{3/2}\) (D2) ionic transition of \(^{40,42,44,48}\)Ca isotopes were successfully measured. The extracted isotope shifts relative to \(^{40}\)Ca showed excellent agreement with the literature values. This 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.

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Authors and Affiliations

  1. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China

    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

  2. China Institute of Atomic Energy (CIAE), P.O. Box 275(10), Beijing, 102413, China

    Chuang-Ye He

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  1. Shi-Wei Bai
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Contributions

All authors contributed to the study conception and design. Experiment was carried out by 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 and Qi-Te Li. Data analysis was performed by Shi-Wei Bai, Xiao-fei Yang, Shu-Jing Wang, Yong-Chao Liu. The first draft of the manuscript was written by Shi-Wei Bai and Xiao-Fei Yang and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Xiao-Fei Yang.

Additional information

This work was supported by the National Natural Science Foundation of China (Nos. 12027809, U1967201, 11875073, 11875074 and 11961141003), National Key R&D Program of China (No. 2018YFA0404403), China National Nuclear Corporation (No. FA18000201), and the State Key Laboratory of Nuclear Physics and Technology, Peking University (No. NPT2019ZZ02).

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Bai, SW., Yang, XF., Wang, SJ. et al. Commissioning of a high-resolution collinear laser spectroscopy apparatus with a laser ablation ion source. NUCL SCI TECH 33, 9 (2022). https://doi.org/10.1007/s41365-022-00992-5

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