Scattering angle-integrated (total) and magnetic sublevel cross-sections and degree of linear polarization for electron and proton induced excitation [HeI (1snp) 1P0 (n=2–5)] of helium
✍ Scribed by H. Merabet; R. Bruch; J. Hanni; M. Bailey; A.L. Godunov; J.H. McGuire; D.V. Fursa; I. Bray; K. Bartschat; H.C. Tseng; C.-D. Lin
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 719 KB
- Volume
- 83
- Category
- Article
- ISSN
- 0092-640X
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✦ Synopsis
Experimental scattering-angle-integrated (total) cross-sections r r, (scattering) angle-integrated magnetic sublevel cross-sections r r ML , and degree of linear polarization data have been measured in the extreme ultraviolet (EUV) wavelength region following decay of HeI ð1snpÞ 1 P 0 ðn ¼ 2-5Þ states induced by electron and proton impact on a neutral helium target. These measurements are compared with a first Born approach as well as more sophisticated theoretical calculations. Specifically, theoretical values for electron impact include convergent close-coupling (CCC) and R-matrix with pseudo states (RMPS) methods in addition to first Born (Born 1) approximation while proton induced excitation cross-sections are compared with atomic-orbital close-coupling (AOCC) and first Born predictions.