Lifetime measurement of the 3d9 2D3/2 metastable level in Mo15+ at an electron beam ion trap

doi:10.1088/1674-1056/acf121

中国物理B ›› 2023, Vol. 32 ›› Issue (10): 103201-103201.doi: 10.1088/1674-1056/acf121

Lifetime measurement of the 3d⁹ ²D_3/2 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

收稿日期:2023-07-13 修回日期:2023-07-13 接受日期:2023-08-17 出版日期:2023-09-21 发布日期:2023-10-08
通讯作者: Bingsheng Tu, Ke Yao E-mail:Binshengtu@fudan.edu.cn;keyao@fudan.edu.cn
基金资助:
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).

Lifetime measurement of the 3d⁹ ²D_3/2 metastable level in Mo¹⁵⁺ at an electron beam ion trap

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

Received:2023-07-13 Revised:2023-07-13 Accepted:2023-08-17 Online:2023-09-21 Published:2023-10-08
Contact: Bingsheng Tu, Ke Yao E-mail:Binshengtu@fudan.edu.cn;keyao@fudan.edu.cn
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: lifetime measurement, molybdenum ions, metastable levels, electron beam ion trap (EBIT)

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.

Key words: lifetime measurement, molybdenum ions, metastable levels, electron beam ion trap (EBIT)

中图分类号: (Oscillator strengths, lifetimes, transition moments)

32.70.Cs

32.30.Jc (Visible and ultraviolet spectra)

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 ²D_3/2 metastable level in Mo¹⁵⁺ at an electron beam ion trap[J]. 中国物理B, 2023, 32(10): 103201-103201.

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Lifetime measurement of the 3d⁹ ²D_3/2 metastable level in Mo¹⁵⁺ at an electron beam ion trap

Lifetime measurement of the 3d⁹ ²D_3/2 metastable level in Mo¹⁵⁺ at an electron beam ion trap

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