Electron localization of in a dc electric field**Project supported by the National Natural Science Foundation of China (Grant Nos. 11127901, 61521093, 11134010, 11227902, 11222439, and 11274325) and the National Basic Research Program of China (Grant No. 2011CB808103).

Abstract

A dc electric field is utilized to steer the electron motion after the molecular ion is excited by an ultrashort ultraviolet laser pulse. The numerical simulation shows that the electron localization distribution and the dissociation control ratio are dependent on the polarization direction and amplitude of the dc electric field. Most electrons of the dissociation state move opposite to the dc electric field and stabilize at the dressed-up potential well, for the dressed-down well is occupied by the electrons of the 1s state.