Spectroscopic study of B2Σ+–X1 2Π1/2 transition of electron electric dipole moment candidate PbF

doi:10.1088/1674-1056/ac633a

中国物理B ›› 2022, Vol. 31 ›› Issue (9): 93301-093301.doi: 10.1088/1674-1056/ac633a

Spectroscopic study of B²Σ⁺–X₁ ²Π_1/2 transition of electron electric dipole moment candidate PbF

Ben Chen(陈犇), Yi-Ni Chen(陈旖旎), Jia-Nuan Pan(潘佳煖), Jian-Ping Yin(印建平), and Hai-Ling Wang(汪海玲)^†

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China

收稿日期:2022-02-02 修回日期:2022-03-20 接受日期:2022-04-01 出版日期:2022-08-19 发布日期:2022-08-24
通讯作者: Hai-Ling Wang E-mail:hlwang@phy.ecnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11674096 and 11874151).

Spectroscopic study of B²Σ⁺–X₁ ²Π_1/2 transition of electron electric dipole moment candidate PbF

Ben Chen(陈犇), Yi-Ni Chen(陈旖旎), Jia-Nuan Pan(潘佳煖), Jian-Ping Yin(印建平), and Hai-Ling Wang(汪海玲)^†

State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China

Received:2022-02-02 Revised:2022-03-20 Accepted:2022-04-01 Online:2022-08-19 Published:2022-08-24
Contact: Hai-Ling Wang E-mail:hlwang@phy.ecnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11674096 and 11874151).

摘要/Abstract

摘要： PbF, a valuable candidate for measuring the electron electric dipole moment (eEDM), is of great significance in measuring its spectrum and deriving its molecular constants in experiment. In the present work, the rovibronic spectrum of the B$^{2}{\Sigma }^{+}$-X$_{1}^{\, 2}{\Pi }_{1/2}$ transition of PbF in a wavelength range of 260 nm-285 nm is studied by the laser ablation/laser induced fluorescence method. The molecular parameters of the X$_{1}^{\, 2}{\Pi }_{1/2}$ (${v''}=0)$ and B$^{2}{\Sigma }^{+}$ (${v}'=0, 1$) states are derived from the recorded spectra of the (0, 0) and (1, 0) bands of the B$^{2}{\Sigma }^{+}$-X$_{1}^{\, 2}{\Pi }_{1/2}$ transition. Also, the Franck-Condon factors (FCFs) of the transitions between the B$^{2}{\Sigma }^{+}$ and X$_{1}^{\, 2}{\Pi }_{1/2}$ states are calculated by the RKR/LEVEL method and the Morse potential method, respectively.

关键词: spectroscopic parameters, Franck-Condon factors, an eEDM candidate, lifetime

Abstract: PbF, a valuable candidate for measuring the electron electric dipole moment (eEDM), is of great significance in measuring its spectrum and deriving its molecular constants in experiment. In the present work, the rovibronic spectrum of the B$^{2}{\Sigma }^{+}$-X$_{1}^{\, 2}{\Pi }_{1/2}$ transition of PbF in a wavelength range of 260 nm-285 nm is studied by the laser ablation/laser induced fluorescence method. The molecular parameters of the X$_{1}^{\, 2}{\Pi }_{1/2}$ (${v''}=0)$ and B$^{2}{\Sigma }^{+}$ (${v}'=0, 1$) states are derived from the recorded spectra of the (0, 0) and (1, 0) bands of the B$^{2}{\Sigma }^{+}$-X$_{1}^{\, 2}{\Pi }_{1/2}$ transition. Also, the Franck-Condon factors (FCFs) of the transitions between the B$^{2}{\Sigma }^{+}$ and X$_{1}^{\, 2}{\Pi }_{1/2}$ states are calculated by the RKR/LEVEL method and the Morse potential method, respectively.

Key words: spectroscopic parameters, Franck-Condon factors, an eEDM candidate, lifetime

中图分类号: (Fine and hyperfine structure)

33.15.Pw

33.20.Lg (Ultraviolet spectra) 33.20.Vq (Vibration-rotation analysis) 33.70.Ca (Oscillator and band strengths, lifetimes, transition moments, and Franck-Condon factors)

Ben Chen(陈犇), Yi-Ni Chen(陈旖旎), Jia-Nuan Pan(潘佳煖), Jian-Ping Yin(印建平), and Hai-Ling Wang(汪海玲)^†. Spectroscopic study of B²Σ⁺–X₁ ²Π_1/2 transition of electron electric dipole moment candidate PbF[J]. 中国物理B, 2022, 31(9): 93301-093301.

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Spectroscopic study of B²Σ⁺–X₁ ²Π_1/2 transition of electron electric dipole moment candidate PbF

Spectroscopic study of B²Σ⁺–X₁ ²Π_1/2 transition of electron electric dipole moment candidate PbF

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