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Absolute cross sections for excitation of the 2s s-2 -> 2p p-2 transition in b2+ and for electron-impact single ionization of b2+

Woitke, O. and Djuric, N. and Dunn, G.H. and Bannister, M.E. and Smith, A.C.H. and Wallbank, B. and Badnell, N.R. and Pindzola, M.S. (1998) Absolute cross sections for excitation of the 2s s-2 -> 2p p-2 transition in b2+ and for electron-impact single ionization of b2+. Physical Review A, 58 (6). pp. 4512-4517. ISSN 1094-1622

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Abstract

Absolute cross sections for electron-impact excitation of the 2s2S⃗2p2P transition of B2+ measured between 5.4 and 7.0 eV are presented. The results are in good agreement with the R-matrix-with-pseudostates (RMPS) calculation of Marchalant et al. [J. Phys. B 30, L435 (1997)]. Also presented are cross sections for electron-impact single ionization of B2+, including measurements between 25 and 200 eV and calculations using the RMPS and time-dependent close-coupling methods. The measured ionization cross sections are about 14% higher near the peak than previous measurements by Crandall et al. [Phys. Rev. A 34, 1757 (1986)], but agree well with experimental data of Hofmann et al. [Z. Phys. D 16, 113 (1990)] and with the present and other theoretical predictions.