The relation between absorbed dose in a source region with a uniform concentration of electron emitters and in a target region separated by a plane interface, derived by Charlton and Cormack [Rad. Res. 17, 34-49 (1962)], has been generalized to the case of an interface of arbitrary shape. The present schema is designed to facilitate the use of the improved point kernels calculated by Berger [Natl. Bur. Stand. (U. S.) NBSIR 73-107 (1973)]. A general expression for the geometric reduction factor for a target region is derived and applied to the case of a cylindrical interface. Notable differences between the present results and the existing data are presented.

This content is only available as a PDF.
You do not currently have access to this content.