Electron-impact ionization of B+

J. C. Berengut, S. D. Loch, M. S. Pindzola, C. P. Ballance, D. C. Griffin, M. Fogle, M. E. Bannister

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6 Citations (Scopus)

Abstract

Electron-impact ionization cross sections are calculated for the ground and metastable states of B+. Com- parisons between perturbative distorted-wave and nonperturbative close-coupling calculations find reductions in the direct ionization cross sections due to long-range electron correlation effects of approximately 10% for the ground state and approximately 15% for the metastable state. Previous crossed-beams experiments, with a metastable to ground ratio of between 50% and 90%, are found to be in reasonable agreement with metastable state close-coupling results. New crossed-beams experiments, with a metastable to ground ratio of only 9%, are found to be in reasonable agreement with ground state close-coupling results. Combined with previous work on neutral B and B2+, the nonperturbative close-coupling calculations provide accurate ionization cross sections for the study of edge plasmas in controlled fusion research.
Original languageEnglish
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Volume78
Issue number1
DOIs
Publication statusPublished - 2008

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