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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 |
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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.
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Received: 27 July 2021
Revised: 23 September 2021
Accepted manuscript online: 29 September 2021
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PACS:
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82.53.Eb
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(Pump probe studies of photodissociation)
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82.80.Ms
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(Mass spectrometry (including SIMS, multiphoton ionization and resonance ionization mass spectrometry, MALDI))
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82.53.-k
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(Femtochemistry)
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| Fund: 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). |
Corresponding Authors:
Hang Lv, Hai-Feng Xu
E-mail: lvhang0811@jlu.edu.cn;xuhf@jlu.edu.cn
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Cite this article:
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 2022 Chin. Phys. B 31 028202
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