Electron-impact excitation of neutral boron using the R-matrix with the pseudostates method

Ballance, C. P. and Griffin, D. C. and Berrington, K. A. and Badnell, N. R. (2007) Electron-impact excitation of neutral boron using the R-matrix with the pseudostates method. Journal of Physics B: Atomic, Molecular and Optical Physics, 40 (6). pp. 1131-1139. ISSN 0953-4075 (https://doi.org/10.1088/0953-4075/40/6/004)

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Abstract

We have carried out a large R-matrix with pseudostates (RMPS) calculation of the electron-impact excitation of neutral boron. The RMPS method has been employed for the excitation/ionization of many light fusion related species, but primarily for one or two active electrons. The present 640-term close-coupling calculation included three distinct pseudostate expansions. This enabled us to both converge the N-electron structure for three active open-shell electrons and accurately represent the high Rydberg and target continuum states. The derived Maxwell-averaged effective collision strengths will be employed to model the spectral emission from boron, which is of importance to both current (TEXTOR) and future ( ITER) magnetic fusion reactors. The full set of effective collision strengths is available at the Oak Ridge National Laboratory Controlled Fusion Atomic Data Center Web site.