Electron-impact ionization of the boron atom

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

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


Accurate knowledge of the electron-impact ionization of the B atom is urgently needed in current fusion plasma experiments to help design ITER wall components. Since no atomic measurements exist, nonperturba- tive time-dependent close-coupling (TDCC) calculations are carried out to accurately determine the direct ionization cross sections of the outer two subshells of B. Perturbative distorted-wave and semiempirical binary encounter calculations are found to yield cross sections from 26% lower to an order of magnitude higher than the current TDCC results. Unlike almost all neutral atoms, large excitation-autoionization contributions are found for the B atom. Nonperturbative R matrix with pseudostates (RMPS) calculations are also carried out to accurately determine the total ionization cross section of B. Previous 60 LS-term RMPS calculations are found to yield cross sections up to 40% higher than the current more extensive 476 LS-term RMPS results
Original languageEnglish
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Issue number4
Publication statusPublished - 2007


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