title: Experimental and theoretical investigation of high-power laser ionization and dissociation of methane.
abstract: The main purpose of this paper is to report the high-power laser ionization-dissociation of CH(4) at various femtosecond (fs) laser intensities (from 1 x 10(14) W/cm(2) to 2 x 10(15) W/cm(2)) with a laser pulse duration of 48 fs. The generalized molecular Keldysh theory has been applied to calculate the ionization yields for CH(4)+ and CH(4)++. Outside the influence of the fs intense laser, we propose to calculate the mass spectra due to the decomposition of CH(4)+ and CH(4)++, using the Rice-Ramsperger-Kassel-Marcus (RRKM) theory. The agreement between the experimental mass spectra and calculated mass spectra seems to be reasonable.
authors.affiliation: Department of Physics, Engineering Physics and Optics, Laval University, Quebec City, Quebec, GIK 7P4, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Sharifi
authors.forename: F
authors.initials: F
authors.lastname: Kong
authors.forename: S L
authors.initials: SL
authors.lastname: Chin
authors.forename: H
authors.initials: H
authors.lastname: Mineo
authors.forename: Y
authors.initials: Y
authors.lastname: Dyakov
authors.forename: A M
authors.initials: AM
authors.lastname: Mebel
authors.forename: S D
authors.initials: SD
authors.lastname: Chao
authors.forename: M
authors.initials: M
authors.lastname: Hayashi
authors.forename: S H
authors.initials: SH
authors.lastname: Lin