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Amusia MY, Avdonina NB, Drukarev EG, et al. Qualitative modification of the high energy atomic photoionization cross section. Phys Rev Lett. 2000;85(22):4703-6doi: 10.1103/PhysRevLett.85.4703.
Amusia, M. Y., Avdonina, N. B., Drukarev, E. G., Manson, S. T., & Pratt, R. H. (2000). Qualitative modification of the high energy atomic photoionization cross section. Physical review letters, 85(22), 4703-6. https://doi.org/10.1103/PhysRevLett.85.4703
Amusia, et al. "Qualitative modification of the high energy atomic photoionization cross section." Physical review letters vol. 85,22 (2000): 4703-6. doi: https://doi.org/10.1103/PhysRevLett.85.4703
Amusia MY, Avdonina NB, Drukarev EG, Manson ST, Pratt RH. Qualitative modification of the high energy atomic photoionization cross section. Phys Rev Lett. 2000 Nov 27;85(22):4703-6. doi: 10.1103/PhysRevLett.85.4703. PMID: 11082631.
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Phys Rev Lett. 2000 Nov 27;85(22):4703-6. doi: 10.1103/PhysRevLett.85.4703.

Qualitative modification of the high energy atomic photoionization cross section.

Physical review letters

Amusia, Avdonina, Drukarev, Manson, Pratt

Affiliations

  1. The Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel and A. F. Ioffe Physical-Technical Institute, 194021 St. Petersburg, Russia.

PMID: 11082631 DOI: 10.1103/PhysRevLett.85.4703

Abstract

It is demonstrated that the nonrelativistic high energy omega-->infinity behavior of the photoionization cross section of an nl atomic subshell, sigma(nl)(omega), for l>0 is independent of l and is given by sigma(nl)(omega) approximately 1/omega(9/2), rather than the previously generally accepted sigma(nl)(omega) approximately 1/omega(l+7/2). Furthermore, for l = 1, although the exponent does not change, the coefficient is significantly altered. This modification of sigma(nl)(omega) is due to the interchannel interaction between ns photoionization channels and l not equal0 channels in the atom. As a result, for the photoionization of l not equal0 electrons, the single-particle approximation is never correct in the omega-->infinity limit. This has important consequences for sum rule calculations.

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