外文题目: Electron localization of linear symmetric molecular ion H-3(2+)
作者: Jia, Zheng-Mao; Zeng, Zhi-Nan; Li, Ru-Xin
刊名: Chin. Phys. B
年: 2017 卷: 26 期: 1 文章编号：13203
英文关键词:
dissociation localization; time-dependent Schrodinger equation; Coulomb potential; ultraviolet laser pulse
LASER FIELDS; DISSOCIATION
英文摘要:
Electron localization in the dissociation of the symmetric linear molecular ion H-3(2+) is investigated. The numerical simulation shows that the electron localization distribution is dependent on the central frequency and peak electric field amplitude of the external ultrashort ultraviolet laser pulse. When the electrons of the ground state are excited onto the 2p sigma(2)Sigma(+)(u) by a one-photonprocess, most electrons of the dissociation states are localized at the protons on both sides symmetrically. Almost no electron is stabilized at the middle proton due to the odd symmetry of the wave function. With the increase of the frequency of the external ultraviolet laser pulse, the electron localization ratio of the middle proton increases, for more electrons of the ground state are excited onto the higher 3p sigma(2)Sigma(+)(u) state. 50.9% electrons of all the dissociation events can be captured by the middle Coulomb potential well through optimizing the central frequency and peak electric field amplitude of the ultraviolet laser pulse. Besides, a direct current (DC) electric field can be utilized to control the electron motions of the dissociation states after the excitation of an ultraviolet laser pulse, and 68.8% electrons of the dissociation states can be controlled into the middle proton.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1088/1674-1056/26/1/013203


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