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Evidence for correlated double-electron capture in slow collisions of multicharged ions with He and H2

1987; Elsevier BV; Volume: 24-25; Linguagem: Inglês

10.1016/0168-583x(87)90600-8

1872-9584

F. W. Meyer, C. C. Havener, R. A. Phaneuf, J.K. Swenson, S. M. Shafroth, N. Stolterfoht,

Advanced Chemical Physics Studies

High resolution measurements of the production of L1L23X Coster-Kronig and LMX-Auger electrons in slow collisions of C4+, N5+, O6+, and O7+ with He and H2 have been performed, using the method of 0° Auger spectroscopy. For the latter three projectiles, strong Coster-Kronig lines are observed, which are attributed to the configurations (core)2pnl, produced by double-elec- tron capture. It is argued that production of these nonequivalent electron configurations must involve electron-electron correlation. From a comparison of the production cross sections for these Coster-Kronig electrons and the LMX-Auger electrons, it is further argued that correlation plays a significant role in two-electron transfer processes.