刘小井

刘小井课题组介绍

课题组长丨研究简介丨发表文章丨组内活动丨组内动态丨本组成员

课题组长(PI)

刘小井，副教授
通讯地址：上海市浦东新区华夏中路393号物质学院5号楼

电子邮件：liuxj#shanghaitech.edu.cn

1992/9-2001/6，中国科技大学本科、博士
2001/7-2004/11, 中国科技大学讲师、副教授
2004/12-2013/6，日本东北大学博士后、研究助理教授，法国SOLEIL同步辐射实验室束线科学家

2013/7-2017/8，上海应用物理研究所研究员，北京航空航天大学物理学院教授

2017/9-现在，上海科技大学物质学院常任副教授

研究简介(Research)

研究原子、分子和团簇在同步辐射、飞秒激光、自由电子激光下的激发、电离、Auger电子发射和解离等过程。原子分子是化学反应中的最小单元，原子、分子和团簇是研究量子多体问题的理想体系。原则上所有的微观反应过程都可以统一用电子和原子核在不同时空尺度上的运动来表述，但是处于激发态的多尺度量子多体问题求解一直难于得到解决。同步辐射提供能量从几十到几千电子伏的高度单色化的光子，可以精确选择激发态；飞秒激光下时间依赖的强激光场提供了研究动态过程和操控反应过程的手段，而自由电子激光结合了同步辐射和飞秒激光的优点。我们的目标是直接观察微观体系在反应中的电子和原子的实时运动。

飞秒激光系统

自主设计制造复合速度成像谱仪达到国际先进水平

左：EPICEA 实验装置（法国SOLEIL同步辐射光源）

右：分子坐标下的双缝干涉, Liu DOI: 10.1038/NPHOTON.2014.289

发表文章(Publications)

21. Xiaohong Li; Bocheng Ding; Yunfei Feng; Ruichang Wu; Lifang Tian; Jianye Huang; Xiaojing Liu. High Energy Inner Shell Photoelectron Diffraction in CO$_2$. Chin. Phys. Lett.2022, 39 (3), 33401. https://doi.org/10.1088/0256-307X/39/3/033401.

20. Li, J.; Shu, Z.; Hu, S.; Bi, C.; Huang, A.; Xiao, Z.; Liu, X.; Chen, J. High-Order Harmonic Generation from Stretched ${\mathrm{C}}_{2}{\mathrm{H}}_{2}$ Molecules in Intense Laser Fields. Phys. Rev. A 2022, 105 (2), 023105. https://doi.org/10.1103/PhysRevA.105.023105.

19. Ding, B.; Xu, W.; Wu, R.; Feng, Y.; Tian, L.; Li, X.; Huang, J.; Liu, Z.; Liu, X. A Composite Velocity Map Imaging Spectrometer for Ions and 1 KeV Electrons at the Shanghai Soft X-Ray Free-Electron Laser. Applied Sciences 2021, 11 (21), 10272. https://doi.org/10.3390/app112110272.

18. Ding, B.; Wu, R.; Feng, Y.; Liu, X. Nuclear Dissociation after the O 1s → ()3sσ Excitation in O2 Molecules. Chinese Phys. B 2022, 31 (8), 083301. https://doi.org/10.1088/1674-1056/ac560b.

17. Tian, L.; Ding, B.; Nicolas, C.; Wu, R.; Feng, Y.; Patanen, M.; Nandi, S.; Bozek, J.; Miron, C.; Liu, X.-J. Selective Dissociation of the Spectator Auger Final States in ${\mathrm{O}}_{2}$ Molecules. Phys. Rev. A 2021, 103 (4), 043103. https://doi.org/10.1103/PhysRevA.103.043103.

16. Song, S.; Ding, B.; Xu, W.; Nicolas, C.; Patanen, M.; Nandi, S.; Bozek, J.; Miron, C.; Xiao, Z.; Liu, X.-J. Sequential Electron Emission and Nuclear Dissociation after the O $1s\ensuremath{\rightarrow}(^{4}{\mathrm{\ensuremath{\Sigma}}}_{u}^{\ensuremath{-}})4p\ensuremath{\sigma}$ Excitation in ${\mathrm{O}}_{2}$ Molecules. Phys. Rev. A 2019, 99 (2), 022511. https://doi.org/10.1103/PhysRevA.99.022511.

15. Niozu, A.; Yokono, N.; Nishiyama, T.; Fukuzawa, H.; Sakurazawa, T.; Matsuda, K.; Takanashi, T.; You, D.; Li, Y.; Ono, T.; Gaumnitz, T.; Schöffler, M.; Grundmann, S.; Wada, S.; Carpeggiani, P.; Xu, W. Q.; Liu, X. J.; Owada, S.; Tono, K.; Togashi, T.; Yabashi, M.; Kryzhevoi, N. V.; Gokhberg, K.; Kuleff, A. I.; Cederbaum, L. S.; Ueda, K.; Nagaya, K. Electron Spectroscopic Study of Nanoplasma Formation Triggered by Intense Soft X-Ray Pulses. J. Chem. Phys. 2019, 151 (18), 184305. https://doi.org/10.1063/1.5115053.

14. Fukuzawa, H.; Takanashi, T.; Kukk, E.; Motomura, K.; Wada, S.; Nagaya, K.; Ito, Y.; Nishiyama, T.; Nicolas, C.; Kumagai, Y.; Iablonskyi, D.; Mondal, S.; Tachibana, T.; You, D.; Yamada, S.; Sakakibara, Y.; Asa, K.; Sato, Y.; Sakai, T.; Matsunami, K.; Umemoto, T.; Kariyazono, K.; Kajimoto, S.; Sotome, H.; Johnsson, P.; Schöffler, M. S.; Kastirke, G.; Kooser, K.; Liu, X.-J.; Asavei, T.; Neagu, L.; Molodtsov, S.; Ochiai, K.; Kanno, M.; Yamazaki, K.; Owada, S.; Ogawa, K.; Katayama, T.; Togashi, T.; Tono, K.; Yabashi, M.; Ghosh, A.; Gokhberg, K.; Cederbaum, L. S.; Kuleff, A. I.; Fukumura, H.; Kishimoto, N.; Rudenko, A.; Miron, C.; Kono, H.; Ueda, K. Real-Time Observation of X-Ray-Induced Intramolecular and Interatomic Electronic Decay in CH2I2. Nat Commun 2019, 10 (1), 2186. https://doi.org/10.1038/s41467-019-10060-z.

13. Fukuzawa, H.; Lucchese, R. R.; Liu, X.-J.; Sakai, K.; Iwayama, H.; Nagaya, K.; Kreidi, K.; Schöffler, M. S.; Harries, J. R.; Tamenori, Y.; Morishita, Y.; Suzuki, I. H.; Saito, N.; Ueda, K. Probing Molecular Bond-Length Using Molecular-Frame Photoelectron Angular Distributions. J. Chem. Phys. 2019, 150 (17), 174306. https://doi.org/10.1063/1.5091946.

12. Kumagai, Y.; Fukuzawa, H.; Motomura, K.; Iablonskyi, D.; Nagaya, K.; Wada, S.; Ito, Y.; Takanashi, T.; Sakakibara, Y.; You, D.; Nishiyama, T.; Asa, K.; Sato, Y.; Umemoto, T.; Kariyazono, K.; Kukk, E.; Kooser, K.; Nicolas, C.; Miron, C.; Asavei, T.; Neagu, L.; Schöffler, M. S.; Kastirke, G.; Liu, X.; Owada, S.; Katayama, T.; Togashi, T.; Tono, K.; Yabashi, M.; Golubev, N. V.; Gokhberg, K.; Cederbaum, L. S.; Kuleff, A. I.; Ueda, K. Following the Birth of a Nanoplasma Produced by an Ultrashort Hard-X-Ray Laser in Xenon Clusters. Phys. Rev. X 2018, 8 (3), 031034. https://doi.org/10.1103/PhysRevX.8.031034.

11. Liu, X.-J.; Nicolas, C.; Patanen, M.; Miron, C. Disentangling Auger Decays in O2 by Photoelectron-Ion Coincidences. Sci Rep 2017, 7 (1), 2898. https://doi.org/10.1038/s41598-017-02875-x.

10. Liu, X.-J.; Nicolas, C.; Miron, C. In Situ Correction of the Spherical Aberration in a Double-Toroidal Electron Analyzer. Review of Scientific Instruments 2017, 88 (2), 023110. https://doi.org/10.1063/1.4975379.

9. Nagaya, K.; Motomura, K.; Kukk, E.; Fukuzawa, H.; Wada, S.; Tachibana, T.; Ito, Y.; Mondal, S.; Sakai, T.; Matsunami, K.; Koga, R.; Ohmura, S.; Takahashi, Y.; Kanno, M.; Rudenko, A.; Nicolas, C.; Liu, X.-J.; Zhang, Y.; Chen, J.; Anand, M.; Jiang, Y. H.; Kim, D.-E.; Tono, K.; Yabashi, M.; Kono, H.; Miron, C.; Yao, M.; Ueda, K. Ultrafast Dynamics of a Nucleobase Analogue Illuminated by a Short Intense X-Ray Free Electron Laser Pulse. Phys. Rev. X 2016, 6 (2), 021035. https://doi.org/10.1103/PhysRevX.6.021035.

8. Nagaya, K.; Motomura, K.; Kukk, E.; Takahashi, Y.; Yamazaki, K.; Ohmura, S.; Fukuzawa, H.; Wada, S.; Mondal, S.; Tachibana, T.; Ito, Y.; Koga, R.; Sakai, T.; Matsunami, K.; Nakamura, K.; Kanno, M.; Rudenko, A.; Nicolas, C.; Liu, X.-J.; Miron, C.; Zhang, Y.; Jiang, Y.; Chen, J.; Anand, M.; Kim, D. E.; Tono, K.; Yabashi, M.; Yao, M.; Kono, H.; Ueda, K. Femtosecond Charge and Molecular Dynamics of I-Containing Organic Molecules Induced by Intense X-Ray Free-Electron Laser Pulses. Faraday Discuss. 2016, 194 (0), 537–562. https://doi.org/10.1039/C6FD00085A.

7. Liu, X.-J.; Miao, Q.; Gel’mukhanov, F.; Patanen, M.; Travnikova, O.; Nicolas, C.; Ågren, H.; Ueda, K.; Miron, C. Einstein–Bohr Recoiling Double-Slit Gedanken Experiment Performed at the Molecular Level. Nature Photon 2015, 9 (2), 120–125. https://doi.org/10.1038/nphoton.2014.289.

6. Liu, X.-J.; Nicolas, C.; Miron, C. Design of a Lens Table for a Double Toroidal Electron Spectrometer. Review of Scientific Instruments 2013, 84 (3), 033105. https://doi.org/10.1063/1.4794440.

5. Fukuzawa, H.; Son, S.-K.; Motomura, K.; Mondal, S.; Nagaya, K.; Wada, S.; Liu, X.-J.; Feifel, R.; Tachibana, T.; Ito, Y.; Kimura, M.; Sakai, T.; Matsunami, K.; Hayashita, H.; Kajikawa, J.; Johnsson, P.; Siano, M.; Kukk, E.; Rudek, B.; Erk, B.; Foucar, L.; Robert, E.; Miron, C.; Tono, K.; Inubushi, Y.; Hatsui, T.; Yabashi, M.; Yao, M.; Santra, R.; Ueda, K. Deep Inner-Shell Multiphoton Ionization by Intense X-Ray Free-Electron Laser Pulses. Phys. Rev. Lett. 2013, 110 (17), 173005. https://doi.org/10.1103/PhysRevLett.110.173005.

4. Lucchese, R. R.; Fukuzawa, H.; Liu, X.-J.; Teranishi, T.; Saito, N.; Ueda, K. Asymmetry in the Molecular-Frame Photoelectron Angular Distribution for Oxygen 1s Photoemission from CO$\less$sub$\greater$2$\less$/Sub$\greater$. J. Phys. B: At. Mol. Opt. Phys. 2012, 45 (19), 194014. https://doi.org/10.1088/0953-4075/45/19/194014.

3. Ouchi, T.; Sakai, K.; Fukuzawa, H.; Liu, X.-J.; Higuchi, I.; Tamenori, Y.; Nagaya, K.; Iwayama, H.; Yao, M.; Zhang, D.; Ding, D.; Kuleff, A. I.; Stoychev, S. D.; Demekhin, Ph. V.; Saito, N.; Ueda, K. Three-Electron Interatomic Coulombic Decay from the Inner-Valence Double-Vacancy States in NeAr. Phys. Rev. Lett. 2011, 107 (5), 053401. https://doi.org/10.1103/PhysRevLett.107.053401.

2. Liu, X.-J.; Fukuzawa, H.; Teranishi, T.; De Fanis, A.; Takahashi, M.; Yoshida, H.; Cassimi, A.; Czasch, A.; Schmidt, L.; Dörner, R.; Wang, K.; Zimmermann, B.; McKoy, V.; Koyano, I.; Saito, N.; Ueda, K. Breakdown of the Two-Step Model in $K$-Shell Photoemission and Subsequent Decay Probed by the Molecular-Frame Photoelectron Angular Distributions of ${\mathrm{CO}}_{2}$. Phys. Rev. Lett. 2008, 101 (8), 083001. https://doi.org/10.1103/PhysRevLett.101.083001.

1. Liu, X.-J.; Fukuzawa, H.; Teranishi, T.; De Fanis, A.; Takahashi, M.; Yoshida, H.; Cassimi, A.; Czasch, A.; Schmidt, L.; Dörner, R.; Koyano, I.; Saito, N.; Ueda, K. Internal Inelastic Scattering Satellite Probed by Molecular-Frame Photoelectron Angular Distributions from ${\mathrm{CO}}_{2}$. Phys. Rev. Lett. 2008, 101 (2), 023001. https://doi.org/10.1103/PhysRevLett.101.023001.