Double ionization of He in an intense laser field via a rescattering process

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.033411· OSTI ID:21450579

Ishikawa, T; Toshima, N ^[1]; Tong, X M ^[1]

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1. Institute of Materials Science, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573 (Japan)

We investigate the ratio of double to single ionization of He in an intense laser field based on the rescattering model. Folding the rescattering energy spectra with the electron impact inelastic cross sections, we obtain the probability of double ionization due to the nonsequential ionization process. Our results are in reasonable agreement with the experiment [Walker et al., Phys. Rev. Lett. 73, 1227 (1994)]. Furthermore, we investigate the physical insights of the nonsequential double ionization by analyzing the rescattering energy spectra at different intensities and the contributions from individual returns. This study confirms the reliability of the rescattering energy spectra obtained from ab initio calculations. The rescattering information can be used to analyze many other dynamical processes in intense laser-matter interactions, such as molecular imaging.

• OSTI ID: 21450579
• Journal Information: Physical Review. A, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevA.82.033411; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CROSS SECTIONS
ELECTRON-ATOM COLLISIONS
ELECTRONS
ENERGY SPECTRA
IONIZATION
LASER RADIATION
PHOTON-ATOM COLLISIONS
PHOTON-MOLECULE COLLISIONS
PROBABILITY
RESCATTERING
ATOM COLLISIONS
COLLISIONS
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
FERMIONS
LEPTONS
MOLECULE COLLISIONS
PHOTON COLLISIONS
RADIATIONS
SCATTERING
SPECTRA