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Lifetime measurement of the 3d9 2D3/2 metastable level in Mo15+ at an electron beam ion trap |
| Jialin Liu(刘佳林)1,†, Yintao Wang(王银涛)1,†, Bingsheng Tu(屠秉晟)1,‡, Liangyu Huang(黄良玉)1, Ran Si(司然)1, Jiguang Li(李冀光)2, Mingwu Zhang(张明武)3, Yunqing Fu(傅云清)1, Yaming Zou(邹亚明)1, and Ke Yao(姚科)1,§ |
1 Shanghai EBIT laboratory, and Key Laboratory of Nuclear Physics and Ion-Beam Application(MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China;
2 Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
3 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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Abstract An experimental measurement of the lifetime of $3\rm d^9$ $^2{\rm D}_{3/2}$ metastable level in Mo$^{15+}$ is reported in this work. The Mo$^{15+}$ ions are produced and trapped in an electron beam ion trap with a magnetic field of 0.65 T. The decay photons emitted from $3\rm d^9$ $^2{\rm D}_{3/2}$ level are subsequently recorded via a cooled photomultiplier tube. Through meticulous scrutiny of potential systematic uncertainties affecting the measurement outcomes, we have determined the lifetime of Mo$^{15+}$ $3\rm d^9$ $^2{\rm D}_{3/2}$ metastable level to be 2.83(22) ms. The experimental result provides a clear distinguishment from existing calculations based on various theoretical approaches.
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Received: 13 July 2023
Revised: 13 July 2023
Accepted manuscript online: 17 August 2023
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PACS:
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32.70.Cs
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(Oscillator strengths, lifetimes, transition moments)
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32.30.Jc
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(Visible and ultraviolet spectra)
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| Fund: Project supported by the National Key R&D Program of China (Grant No. 2022YFA1602500) and the National Natural Science Foundation of China (Grant No. 12274352). |
Corresponding Authors:
Bingsheng Tu, Ke Yao
E-mail: Binshengtu@fudan.edu.cn;keyao@fudan.edu.cn
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Cite this article:
Jialin Liu(刘佳林), Yintao Wang(王银涛), Bingsheng Tu(屠秉晟), Liangyu Huang(黄良玉), Ran Si(司然), Jiguang Li(李冀光), Mingwu Zhang(张明武), Yunqing Fu(傅云清), Yaming Zou(邹亚明), and Ke Yao(姚科) Lifetime measurement of the 3d9 2D3/2 metastable level in Mo15+ at an electron beam ion trap 2023 Chin. Phys. B 32 103201
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