Excitation of helium by proton impact

Tripathi, A. N. ; Mathur, K. C. ; Joshi, Shri Krishna (1971) Excitation of helium by proton impact Physical Review A, 3 (5). pp. 1666-1670. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v3/i5/p1666_1

Related URL: http://dx.doi.org/10.1103/PhysRevA.3.1666


The binary-encounter collision model for ionization of atoms by proton impact proposed by Gerjuoy and Vriens is extended to the problem of proton-impact excitation of a neutral atom from the ground state. We have calculated the proton-excitation cross sections from the ground state of a helium atom to the n1S (n=2-5), n1P (n=2-5), and n1D (n=3,4) states using a d function as well as a quantal-momentum distribution function for the target electrons. The calculated cross sections are compared with other theoretical calculations and the measured values.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:14481
Deposited On:12 Nov 2010 14:12
Last Modified:19 Feb 2011 07:47

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