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Number of results

Journal

2013 | 11 | 9 | 1091-1098

Article title

Above-threshold ionization of hydrogen and hydrogen-like ions by X-ray pulses

Content

Title variants

Languages of publication

EN

Abstracts

EN
This paper adresses the problem of above-threshold ionization (ATI) of hydrogen interacting with an intense X-ray electromagnetic field. Two approaches have been used. In the first approach, we calculate generalized differential and total cross sections based on second-order perturbation theory for the electron interaction with a monochromatic plane wave, with the A
2 and A · P contributions from the nonrelativistic Hamiltonian (including retardation) treated exactly. In the second approach, we solve the time-dependent Schrödinger equation (TDSE) for a pulsed plane wave using a spectral approach with a basis of oneelectron orbitals, calculated with L
2-integrable B-spline functions for the radial coordinate and spherical harmonics Y
lm for the angular part. Retardation effects are included up to O(1/c), they induce extra terms forcing the resolution of the TDSE in a three dimensional space. Relativistic effects [of O (1/c
2)] are fully neglected. The isoelectronic series of hydrogen is explored in the range Z = 1 − 5 in both TDSE and perturbative approaches. Photoelectron angular distributions are obtained for photon energies of 1 keV and 3 keV for hydrogen, and photon energy of 25 keV for the hydrogenic ion B4+. Perturbative and TDSE calculations are compared.

Publisher

Journal

Year

Volume

11

Issue

9

Pages

1091-1098

Physical description

Dates

published
1 - 9 - 2013
online
24 - 11 - 2013

Contributors

author
  • Centre des Lasers Intenses et Applications, Université Bordeaux I-CNRS-CEA, FR-33405, Talence, France
  • National Institute for Laser, Plasma and Radiation Physics, RO-077125, Bucharest-Măgurele, Romania
author
  • Faculty of Physics and Centre for Advanced Quantum Physics, University of Bucharest, RO-077125, Bucharest-Măgurele, Romania
  • Faculty of Physics and Centre for Advanced Quantum Physics, University of Bucharest, RO-077125, Bucharest-Măgurele, Romania

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11534-012-0140-x
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