標題: Neutral dissociation of hydrogen molecules in a strong laser field through superexcited states
作者: Azarm, A.
Song, D.
Liu, K.
Hosseini, S.
Teranishi, Y.
Lin, S. H.
Xia, A.
Kong, F.
Chin, S. L.
應用化學系分子科學碩博班
Institute of Molecular science
公開日期: 28-四月-2011
摘要: Fragmentation of hydrogen molecules in a strong laser field is studied experimentally and theoretically. Balmer lines (n -> 2) from hydrogen atoms are observed up to n = 14. The emission intensity of the two strongest Balmer lines versus laser intensity in a log-log plot gives a slope of more than 11. This indicates that some high-lying states in the continuum are excited resulting in neutral dissociation. Adapting Rydberg state approximation, the potential energy curves of superexcited states of hydrogen are plotted. Semi-empirical calculation confirms dissociation through these superexcited states. The upper limit of the lifetime of the superexcited states is obtained by an ultrafast pump and probe experiment by monitoring one of the fluorescence lines.
URI: http://dx.doi.org/10.1088/0953-4075/44/8/085601
http://hdl.handle.net/11536/8985
ISSN: 0953-4075
DOI: 10.1088/0953-4075/44/8/085601
期刊: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume: 44
Issue: 8
結束頁: 
顯示於類別:期刊論文


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  1. 000289411700011.pdf