Two-electron excitations in helium-like ions by inelastic photon scattering |
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Authors: | M Ya Amus’ya A I Mikhailov I A Mikhailov |
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Institution: | (1) B. P. Konstantinov St. Petersburg Institute of Nuclear Physics, Russian Academy of Sciences, 188350 Gatchina, Leningrad Region, Russia |
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Abstract: | Inelastic photon scattering by helium atoms and helium-like ions with simultaneous excitation of the two-electron transition
1s
2→2s
2 is examined in the nonrelativistic energy range I≪ω≪m (I is the ionization potential, ω is the photon energy, m is the electron mass, and ℏ=c=1). The electrons are assumed to be moving in the Coulomb field of the nucleus, and the electron-electron interaction is
taken into account in the lowest perturbation order. The differential and total cross sections of the process and the autoionization
width of the 2s
2 energy level are calculated. The numerical value of the autoionization width is found to agree with the results of the more
rigorous calculations of other researchers.
Zh. éksp. Teor. Fiz. 113, 539–549 (February 1998) |
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Keywords: | |
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