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Radial Distribution of Electron Spectra from High-Energy IonsThe average track model describes the response of physical and biological systems using radial dose distribution as the key physical descriptor. We report on an extension of this model to describe the average distribution of electron spectra as a function of radial distance from an ion. We present calculations of these spectra for ions of identical linear energy transfer (LET), but dissimilar charge and velocity to evaluate the differences in electron spectra from these ions. To illustrate the usefulness of the radial electron spectra for describing effects that are not described by electron dose, we consider the evaluation of the indirect events in microdosimetric distributions for ions. We show that folding our average electron spectra model with experimentally determined frequency distributions for photons or electrons provides a good representation of radial event spectra from high-energy ions in 0.5-2 micrometer sites.
Document ID
19990045892
Acquisition Source
Johnson Space Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Cucinotta, Francis A.
(NASA Johnson Space Center Houston, TX United States)
Katz, Robert
(Nebraska Univ. Lincoln, NE United States)
Wilson, John W.
(NASA Langley Research Center Hampton, VA United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Publication Information
Publication: Radiat. Environ. Biophys.
Publisher: Springer-Verlag
Volume: 37
Subject Category
Atomic And Molecular Physics
Distribution Limits
Public
Copyright
Other

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