(e,2e) and (e,3-1e) studies on double processes of He near the bethe ridge

N. Watanabe, Y. Khajuria, M. Takahashi, Y. Udagawa, P. S. Vinitsky, Yu V. Popov, O. Chuluunbaatar, K. A. Kouzakov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report (e,2e) and (e,3-1e) experiments on the double processes of He, i.e. single ionization with simultaneous excitation and double-ionization. The symmetric noncoplanar geometry combined with high incident electron energies has made it possible to study at large momentum transfers. The results are compared with plane wave impulse approximation (PWIA) calculations using He wavefunctions of various levels of sophistication. It is shown that shapes of the momentum dependent (e,2e) and (e,3-1e) cross sections are well reproduced by the PWIA calculations when highly correlated wavefunctions are employed, but noticeable discrepancies between experiment and theory remain in magnitude. The discrepancies are, however, reduced with increasing impact energies, suggesting higher excitation energies may be required to analyze these double processes in terms of the PWIA.

Original languageEnglish
Title of host publicationProceedings of the International Symposium on (e,2e), Double Photoionization and Related Topics and the 13th International Symposium on Polarization and Correlation in Electronic and Atomic Collisions
Pages96-101
Number of pages6
DOIs
Publication statusPublished - 2006
EventInternational Symposium on (e,2e), Double Photoionization and Related Topics and the 13th International Symposium on Polarization and Correlation in Electronic and Atomic Collisions - Buenos Aires, Argentina
Duration: 2005 Jul 282005 Jul 30

Publication series

NameAIP Conference Proceedings
Volume811
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherInternational Symposium on (e,2e), Double Photoionization and Related Topics and the 13th International Symposium on Polarization and Correlation in Electronic and Atomic Collisions
Country/TerritoryArgentina
CityBuenos Aires
Period05/7/2805/7/30

Keywords

  • (e, 2e)
  • (e, 3-1e)
  • Double ionization
  • Electron correlation
  • Ionization-excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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