外文题目: Electron localization of H-3(+) and HeH2+ in an ultrashort ultraviolet laser field
作者: Jia, Z. M.; Tang, W. T.; Zeng, Z. N.; Li, R. X.; Xu, Z. Z.
刊名: J. Phys. B-At. Mol. Opt. Phys.
年: 2017 卷: 50 期: 3 文章编号：35602
英文关键词:
ultrashort ultraviolet laser pulse; electron localization control; H-3(+); HeH2+
MOLECULAR DISSOCIATION; IONIZATION
英文摘要:
Electron localization in the dissociation of the molecular ions H-3(+) and HeH2+ in an intense ultrashort ultraviolet laser pulse is studied with the Schrdinger equation. Two different dissociation channels, H-3(+) + n gamma -> H-2 + p and H-3(+) + n gamma -> H-2(+) + H, and HeH2++ n gamma -> He+ + p and HeH2++ n gamma -> alpha + H, for H-3(+) and HeH2+, are investigated, respectively. The numerical and analytical results both show that, for a molecular ion with an asymmetric double-well Coulomb potential, most electrons of the 1s sigma(g) state are localized at the potential well with lower energies. For electrons of the 2p sigma u state, most are localized at the potential well with higher energies when in a single ultraviolet laser pulse. Therefore, for H-3(+), most electrons of the dissociation state are stabilized at the potential well with higher energies (H+), for the lowest dissociation state is the 2p sigma(u) state. Most of the electrons of the dissociation state of HeH2+ are captured by the potential well with lower energies (He2+), because the lowest dissociation state is the 1ssg state and the 2p sigma(u) state is bounded.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1088/1361-6455/50/3/035602


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