Laser-assisted and laser-induced electron-impact ionization during nonsequential double ionization of He

Journal Article · Sat Mar 01 00:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.035401· OSTI ID:20633905

Jaron, A; Becker, A ^[1]

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1. Institute for Theoretical Physics, Warsaw University, Hoza 69, 00-681 Warsaw (Poland)

Two-electron sum-momentum distributions from nonsequential double ionization of He in an intense laser field are analyzed. The results of a S-matrix calculation show that the inelastic scattering of the first electron with the residual ion is best considered as a (internal) laser-induced impact ionization. The parallel component of the sum momentum is found to be largest when the prescattering electron energy is close to zero. This is due to the fact that a large momentum transfer between the sum momentum in the final state and the impact momentum in the intermediate state along the polarization axis favors the absorption of field energy by the two-electron system during the scattering process.

• OSTI ID: 20633905
• Journal Information: Physical Review. A, Vol. 67, Issue 3; Other Information: DOI: 10.1103/PhysRevA.67.035401; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ATOMS
DISTRIBUTION
ELECTRON-ATOM COLLISIONS
ELECTRONS
HELIUM
INELASTIC SCATTERING
INTERMEDIATE STATE
IONIZATION
IONS
LASER RADIATION
MOMENTUM TRANSFER
PHOTON-ATOM COLLISIONS
POLARIZATION
S MATRIX