Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation

doi:10.1088/1674-1056/ac2b15

中国物理B ›› 2022, Vol. 31 ›› Issue (2): 28202-028202.doi: 10.1088/1674-1056/ac2b15

Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation

Long-Xing Zhou(周龙兴)^1,2, Yang Liu(刘洋)^1,2, Shen He(贺屾)^1,2, Da-Shuai Gao(高大帅)^1,2, Xing-Chen Shen(沈星晨)^1,2, Qi Chen(陈淇)^1,2, Tao Yu(于涛)^1,2, Hang Lv(吕航)^1,2,†, and Hai-Feng Xu(徐海峰)^1,2,‡

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China

收稿日期:2021-07-27 修回日期:2021-09-23 接受日期:2021-09-29 出版日期:2022-01-13 发布日期:2022-01-18
通讯作者: Hang Lv, Hai-Feng Xu E-mail:lvhang0811@jlu.edu.cn;xuhf@jlu.edu.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2019YFA0307700), the National Natural Science Foundation of China (Grant Nos. 11874179, 11704149, and 12074144), the Natural Science Foundation of Jilin Province, China (Grant Nos. 20180101289JC and 20190103045JH), and the Science and Technology Project of the Jilin Provincial Education Department, China (Grant No. JJKH20190184KJ).

Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation

1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China

Received:2021-07-27 Revised:2021-09-23 Accepted:2021-09-29 Online:2022-01-13 Published:2022-01-18
Contact: Hang Lv, Hai-Feng Xu E-mail:lvhang0811@jlu.edu.cn;xuhf@jlu.edu.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2019YFA0307700), the National Natural Science Foundation of China (Grant Nos. 11874179, 11704149, and 12074144), the Natural Science Foundation of Jilin Province, China (Grant Nos. 20180101289JC and 20190103045JH), and the Science and Technology Project of the Jilin Provincial Education Department, China (Grant No. JJKH20190184KJ).

摘要/Abstract

摘要： Strong field ionization-photofragmentation (SFI-PF) with ultrafast pump-probe scheme is a powerful approach to study the dynamics of molecular cationic electronic states. Here we carry out a SFI-PF study on the cationic electronic states of vinyl bromide, C₂H₃Br. The yields of the parent C₂H₃Br⁺ and the formation of the fragment (Br⁺, C₂H₂⁺ and C₂H₃⁺) ions have been measured at different pump-probe delay time. Analysis provides experimental evidence of A²A'-X²A" internal conversion of vinyl bromide cations which occurs in a time of about 220 fs, and the time of C₂H₃⁺ formation induced by the dissociation of the A²A' state around 300 fs. The study would add our knowledge of the behavior of electronic excited states of complex molecular cations.

关键词: strong field ionization, ultrafast dynamics, vinyl bromide cation

Abstract: Strong field ionization-photofragmentation (SFI-PF) with ultrafast pump-probe scheme is a powerful approach to study the dynamics of molecular cationic electronic states. Here we carry out a SFI-PF study on the cationic electronic states of vinyl bromide, C₂H₃Br. The yields of the parent C₂H₃Br⁺ and the formation of the fragment (Br⁺, C₂H₂⁺ and C₂H₃⁺) ions have been measured at different pump-probe delay time. Analysis provides experimental evidence of A²A'-X²A" internal conversion of vinyl bromide cations which occurs in a time of about 220 fs, and the time of C₂H₃⁺ formation induced by the dissociation of the A²A' state around 300 fs. The study would add our knowledge of the behavior of electronic excited states of complex molecular cations.

Key words: strong field ionization, ultrafast dynamics, vinyl bromide cation

中图分类号: (Pump probe studies of photodissociation)

82.53.Eb

82.80.Ms (Mass spectrometry (including SIMS, multiphoton ionization and resonance ionization mass spectrometry, MALDI)) 82.53.-k (Femtochemistry)

Long-Xing Zhou(周龙兴), Yang Liu(刘洋), Shen He(贺屾), Da-Shuai Gao(高大帅), Xing-Chen Shen(沈星晨), Qi Chen(陈淇), Tao Yu(于涛), Hang Lv(吕航), and Hai-Feng Xu(徐海峰). Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation[J]. 中国物理B, 2022, 31(2): 28202-028202.

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Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation

Ultrafast dynamics of cationic electronic states of vinyl bromide by strong-field ionization-photofragmentation

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