Energy dependence of cross sections for double-electron capture in 48{endash}132-keV C{sup 6+}+He collisions
- Laboratoire de Spectroscopie Atomique, Institut des Sciences de la Matiere et du Rayonnement, 6 Boulevard Marechal Juin, F-14050 Caen Cedex (France)
- Centre de Physique Theorique et de Modelisation de Bordeaux, URA 1537 du CNRS, Laboratoire des Collisions Atomiques, Universite Bordeaux I, 351 Cours de la Liberation, F-33405 Talence Cedex (France)
- Hahn-Meitner Institut GmbH, Bereich Festkoerperphysik, Glienickerstrasse 100, D-14109 Berlin (Germany)
We report on the projectile energy dependence of the cross sections for producing the configurations 2{ital lnl}{sup {prime}} ({ital n}{ge}3) by double-electron capture in C{sup 6+}+He collisions. The present measurements and calculations, which extend previous work performed on the 90-keV C{sup 6+}+He system, give evidence for dynamic electron-correlation effects in double-capture mechanisms. A significant dependence on the collision energy is found for the cross sections associated with the configurations 2{ital lnl}{sup {prime}} ({ital n}{ge}5). Moreover, anisotropies of the angular distributions of Auger electrons originating from the configurations 2{ital l}3{ital l}{sup {prime}} are observed at 48 and 132 keV. The capture cross sections for producing some of the terms 2{ital l}3{ital l}{sup {prime}} {sup 1}{ital L} are shown to depend on the collision energy. The cross sections for production of the magnetic substates {ital M}{sub {ital L}}=0 associated with the configurations 2{ital l}3{ital l}{sup {prime}} are found to be the same for both energies of 48 and 132 keV. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 279916
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 53; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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