中国物理B ›› 2022, Vol. 31 ›› Issue (10): 103304-103304.doi: 10.1088/1674-1056/ac89df

所属专题: TOPICAL REVIEW — Celebrating 30 Years of Chinese Physics B

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Ultrafast Coulomb explosion imaging of molecules and molecular clusters

Xiaokai Li(李孝开), Xitao Yu(余西涛), Pan Ma(马盼), Xinning Zhao(赵欣宁), Chuncheng Wang(王春成), Sizuo Luo(罗嗣佐), and Dajun Ding(丁大军)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • 收稿日期:2022-07-01 修回日期:2022-08-15 出版日期:2022-10-16 发布日期:2022-09-30
  • 通讯作者: Sizuo Luo, Dajun Ding E-mail:luosz@jlu.edu.cn;dajund@jlu.edu.cn
  • 基金资助:
    Project partially supported by the National Key Research and Development Program of China (Grant Nos. 2019YFA0307700), the National Natural Science Foundation of China (Grant Nos. 12004133, 12074143, 12134005, and 11904120), and China Postdoctoral Science Foundation (Grant No. 2021M691220).

Ultrafast Coulomb explosion imaging of molecules and molecular clusters

Xiaokai Li(李孝开), Xitao Yu(余西涛), Pan Ma(马盼), Xinning Zhao(赵欣宁), Chuncheng Wang(王春成), Sizuo Luo(罗嗣佐), and Dajun Ding(丁大军)   

  1. Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China
  • Received:2022-07-01 Revised:2022-08-15 Online:2022-10-16 Published:2022-09-30
  • Contact: Sizuo Luo, Dajun Ding E-mail:luosz@jlu.edu.cn;dajund@jlu.edu.cn
  • Supported by:
    Project partially supported by the National Key Research and Development Program of China (Grant Nos. 2019YFA0307700), the National Natural Science Foundation of China (Grant Nos. 12004133, 12074143, 12134005, and 11904120), and China Postdoctoral Science Foundation (Grant No. 2021M691220).

摘要: Taking an image of their structure and a movie of their dynamics of small quantum systems have always been a dream of physicists and chemists. Laser-induced Coulomb explosion imaging (CEI) provides a great opportunity to make this dream a reality for small molecules or their aggregation —— clusters. The method is unique for identifying the atomic locations with ångstrom spatial resolution and capturing the structural evolution with a femtosecond time scale, in particular for imaging transient state products. This review summarizes the determination of three-dimensional equilibrium geometry of molecules and molecular cluster system through the reconstruction from the fragments momenta, and also shows that the dissociation dynamics on the complex potential energy surface can be tracked in real-time with the ultrafast CEI (UCEI). Furthermore, the detailed measurement and analysis procedures of the CEI, theoretical methods, exemplary results, and future perspectives of the technique are described.

关键词: Coulomb explosion imaging, molecular structure, molecular cluster, ultrafast dissociation dynamics

Abstract: Taking an image of their structure and a movie of their dynamics of small quantum systems have always been a dream of physicists and chemists. Laser-induced Coulomb explosion imaging (CEI) provides a great opportunity to make this dream a reality for small molecules or their aggregation —— clusters. The method is unique for identifying the atomic locations with ångstrom spatial resolution and capturing the structural evolution with a femtosecond time scale, in particular for imaging transient state products. This review summarizes the determination of three-dimensional equilibrium geometry of molecules and molecular cluster system through the reconstruction from the fragments momenta, and also shows that the dissociation dynamics on the complex potential energy surface can be tracked in real-time with the ultrafast CEI (UCEI). Furthermore, the detailed measurement and analysis procedures of the CEI, theoretical methods, exemplary results, and future perspectives of the technique are described.

Key words: Coulomb explosion imaging, molecular structure, molecular cluster, ultrafast dissociation dynamics

中图分类号:  (Spectra induced by strong-field or attosecond laser irradiation)

  • 33.20.Xx
36.40.Mr (Spectroscopy and geometrical structure of clusters) 82.53.Eb (Pump probe studies of photodissociation)