TY - JOUR
T1 - Electron-impact ionization of B+
AU - Berengut, J. C.
AU - Loch, S. D.
AU - Pindzola, M. S.
AU - Ballance, C. P.
AU - Griffin, D. C.
AU - Fogle, M.
AU - Bannister, M. E.
PY - 2008/7/15
Y1 - 2008/7/15
N2 - Electron-impact ionization cross sections are calculated for the ground and metastable states of B+. Comparisons 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.
AB - Electron-impact ionization cross sections are calculated for the ground and metastable states of B+. Comparisons 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.
UR - http://www.scopus.com/inward/record.url?scp=47749143687&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.78.012704
DO - 10.1103/PhysRevA.78.012704
M3 - Article
AN - SCOPUS:47749143687
SN - 1050-2947
VL - 78
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 1
M1 - 012704
ER -