Semiclassical theory of molecular nonsequential double ionization

Journal Article · Sun Jul 15 04:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.013418· OSTI ID:21011265

Chen, J ^[1]; Fan, J ^[2]; Li, Y; Yang, S P ^[3]

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1. Institute of Applied Physics and Computational Mathematics, P.O. Box 8009 (28), 100088 Beijing (China)
2. Optical Technology Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899 (United States)
3. Department of Physics, Hebei Normal University, Shijiazhuang, 050016 (China)

A semiclassical molecular nonsequential double ionization theory is developed based on the rescattering model. We show that, in the nonsequential double ionization of D{sub 2}, the kinetic energy of the returning electron changes from below to above the ionization threshold of the parent ion as the laser varies from short to long wavelength, resulting in the dominance of collisional ionization at shorter laser wavelength and field ionization at longer laser wavelength. We also calculate the double ionization time distribution of D{sub 2} and the kinetic energy distribution of D{sup +}. The theoretical results are qualitatively consistent with experimental measurements. The nonsequential double to single ionization ratio of N{sub 2}{sup 2+}/N{sub 2}{sup +} is also calculated and compared with available experimental results.

• OSTI ID: 21011265
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 76; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CATIONS
DEUTERIUM
DEUTERIUM IONS
DISTRIBUTION
ELECTRON-ATOM COLLISIONS
ELECTRONS
KINETIC ENERGY
LASER RADIATION
MOLECULAR IONS
NITROGEN
PHOTOIONIZATION
RESCATTERING
SEMICLASSICAL APPROXIMATION
WAVELENGTHS