Merged-beam measurements of absolute cross sections for electron-impact excitation of S4+ (3 s2 S1 →3s3p P1) and S5+ (3s S2 →3p P2)

B. Wallbank, M. E. Bannister, H. F. Krause, Y. S. Chung, A. C.H. Smith, N. Djurić, G. H. Dunn

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Abstract

Absolute cross sections for electron-impact excitation of the dipole-allowed transitions S4+ (3 s2 S1 →3s3p P1) and S5+ (3s S2 →3p P2) were measured near threshold using the merged electron-ion beams energy-loss technique. Although the magnitudes of the measured cross sections are in reasonable agreement with available theoretical data, the experimental data indicate that the contributions of dielectronic resonances in the near-threshold region are underestimated by these calculations.

Original languageEnglish
Article number052703
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume75
Issue number5
DOIs
StatePublished - May 4 2007

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