Excitation-ionization and double ionization of helium by Compton scattering
- 1 October 1994
- journal article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 50 (4) , R2810-R2813
- https://doi.org/10.1103/physreva.50.r2810
Abstract
We investigate the behavior of the cross section for inelastic photon scattering in the limit of high but nonrelativistic photon energies ω→∞ at helium leading to two-electron transitions. Our calculation employs fully correlated wave functions for the helium ground state and different forms for approximate two-electron final states. We determine the ω→∞ limit for the ratio of double to single ionization. We find the high-energy behavior to differ significantly from the one for photoabsorption. Our results confirm our previous estimate [Andersson and Burgdörfer, Phys. Rev. Lett. 71, 50 (1993)] but disagree with recent predictions by Hino et al. [Phys. Rev. Lett. 72, 1620 (1994)].Keywords
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