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Published 1999 | Published
Book Section - Chapter Open

Hydrogen-Impact Ionization Cross Sections in the Bates-Griffing Formalism

Abstract

We describe a simple and effective procedure to estimate the hydrogen-impact ionization cross sections over an energy range relevant to studies of ACR heliospheric transport. The procedure is valid in the first Born approximation using known or estimated electron-impact cross sections. The original Bates-Griffing relation between the two sets of cross sections is reexpressed and a correction factor due to multiple transitions is introduced. Sample cross sections calculations for He, C, 0 and Ne collisions with hydrogen are presented.

Additional Information

© University of Utah. Provided by the NASA Astrophysics Data System. Work has been supported by NSF grant no. 9810653 and NASA-JOVE grant no. NAG8-1208.

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