The dissociation pathways and isotope effects in intense field dissociation of H2+ and HD+. (30th August 2019)

• Record Type: Journal Article
• Authors: Yao, Hongbin; Sun, Zhaopeng; Jiang, Xiangzhan; Cao, Changhong
• Is Part Of: Laser physics letters. Volume 16:Number 10(2019:Oct.)
• Publication Date: 2019-08-30
• Subjects: isotope effects -- dissociation -- photon-dressed states -- kinetic energy resolved spectra; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ab3c5b
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: The dissociation pathways and isotope effects in intense field dissociation of the homonuclear and its inhomonuclear isotope HD + has been investigated by using an accurate 3D non-Born–Oppenheimer approach. The models of the photon-dressed states are presented to analyze the possible dissociation pathways of the and HD + systems. Comparing the kinetic energy resolved spectra of and HD +, the dissociation pathways are clearly distinguished for the and HD + molecules, and that are highly dependent on the laser intensity. Most importantly, the direct two-photon dissociation of HD + occurs at the intensity of 2.0 × 10 14 W cm −2, which is forbidden in the . However, it converts into the net one-photon dissociation as the laser intensity decreases to 4.0 × 10 13 W cm −2 . This conclusion could provide the scientific prediction and theoretical guidance to the experiment in the future.