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Proton dose approximation in arbitrary convex geometryAn expansion is derived for the solution to the transport equation in two dimensions subject to boundary conditions given for an arbitrary convex region. Questions of high-energy transport are considered along with the properties of the dose response function. The expansion of the solution of the transport equation is presented in terms of a parameter which measures the lateral dispersion of an unidirectional beam. This parameter is usually small and the expansion is expected to converge rapidly. The dominant term in the expansion is related to fluence-to-dose conversion factors in a semiinfinite slab for normal incidence. A convenient parameterization of the conversion factors is provided along with numerical examples.
Document ID
19740058125
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wilson, J. W.
(NASA Langley Research Center Hampton, Va., United States)
Khandelwal, G. S.
(Old Dominion University Norfolk, Va., United States)
Date Acquired
August 7, 2013
Publication Date
September 1, 1974
Publication Information
Publication: Nuclear Technology
Volume: 23
Subject Category
Nuclear Engineering
Accession Number
74A40875
Distribution Limits
Public
Copyright
Other

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