Initial applications of threshold photoelectron-photoion  coincidence velocity imaging technique

doi:10.3969/j.issn.0253-2778.2011.05.004

Journal of University of Science and Technology of China ›› 2011, Vol. 41 ›› Issue (5): 399-407.DOI: 10.3969/j.issn.0253-2778.2011.05.004

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Initial applications of threshold photoelectron-photoion coincidence velocity imaging technique

TANG Xiaofeng

1.Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China; 2.National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China

Received:2010-12-09 Revised:2011-04-22 Online:2011-05-31 Published:2011-05-31

Abstract

Abstract: Threshold photoelectron-photoion coincidence (TPEPICO) velocity imaging based on synchrotron radiation ionization utilizes a double velocity map imaging to simulateneously control the trajectories of electron and ion, thus improving their collection efficiencies and energy resolutions. Using this technique, some experimental investigations of atoms and molecules were performed, and the corresponding threshold photoelectron spectroscopy (TPES), TPEPICO time-of-flight mass spectroscopy, TPEPICO spectroscopy, and TPEPICO velocity imaging were measured. Therefore, this novel technique can be applied to studies of ionic structure, identification of components in mixture and dissociation dynamics of state-selected ions.

Key words: photoelectron-photoion coincidence, velocity imaging, threshold photoelectron, synchrotron radiation

TANG Xiaofeng, ZHOU Xiaoguo, NIU Mingli, LIU Shilin, LIU Fuyi, SHAN Xiaobin, SHENG Liusi. Initial applications of threshold photoelectron-photoion coincidence velocity imaging technique[J]. Journal of University of Science and Technology of China, 2011, 41(5): 399-407.

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Initial applications of threshold photoelectron-photoion coincidence velocity imaging technique

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