Journal article

Publication year: 2001

Pages: 1727-1744

Journal: Journal of Physics B: Atomic, Molecular and Optical Physics

Volume number: 34

Issue number: 9

ISSN: 0953-4075

DOI Link: https://doi.org/10.1088/0953-4075/34/9/310

Publisher: IOP Publishing

Abstract: 
Absolute cross sections for electron-impact single ionization of krypton ions Krq+ (q = 12-18) have been measured. The animated crossed-beam method has been applied. The measurements cover the energy range from threshold to about 5.5 keV. The presence of ions formed in metastable states is observed for Kr18+, Kr16+ and Kr14+. Inner-shell excitation from the 2s, 2p, 3s and 3p subshells followed by autoionization is seen to play a dominant role for this reaction over the whole energy range. The importance of these excitation-autoionization processes explains the large underestimation of cross sections from the available theoretical and semi-empirical estimations which include direct processes only.

Harvard Citation style: Khouilid, M., Cherkani-Hassani, S., Rachafi, S., Teng, H. and Defrance, P. (2001) Electron-impact single ionization of krypton ions (q=12-18), Journal of Physics B: Atomic, Molecular and Optical Physics, 34(9), pp. 1727-1744. https://doi.org/10.1088/0953-4075/34/9/310

APA Citation style: Khouilid, M., Cherkani-Hassani, S., Rachafi, S., Teng, H., & Defrance, P. (2001). Electron-impact single ionization of krypton ions (q=12-18). Journal of Physics B: Atomic, Molecular and Optical Physics. 34(9), 1727-1744. https://doi.org/10.1088/0953-4075/34/9/310