228 nm pulse duration dependence in the photodissociation of H2+. (31st October 2017)

• Record Type: Journal Article
• Authors: Jia, Z M; Tang, W T
• Is Part Of: Journal of physics. Volume 50:Number 23(2017:Dec. 01)
• Publication Date: 2017-10-31
• Subjects: hydrogen molecular ion -- photodissociation -- ultraviolet laser pulse; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/aa8da1
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We theoretically investigate the pulse duration dependence in the laser-induced dissociation of the molecular ion H 2 + . The simulation results show that the dissociation ratio can be split up into three regions with increasing duration of the external laser pulse, with a central wavelength of 228 nm, as a result of the electron capture of the vibrationally highly excited H 2 + . With the coupled equations of the 1 s σ g and 2 p σ u states one can find that the pulse duration dependence in the photodissociation of H 2 + is due to the different responses of the molecular dipole to the evolution time of the ultraviolet laser pulse.