Neutron Quality Parameters versus Energy below 4 MeV from Microdosimetric Calculations

Abstract
Charged-particle production by neutrons and the resulting energy-deposition spectra in micron-sized spheres of tissue of varying diameters were calculated from thermal energies to 4 MeV. These data were used to obtain dose-average values of several quality-indicating parameters as functions of neutron energy and of tissue sphere diameter. The contrast among the parameters is shown and discussed. Applications are made to 2 neutron spectra, one a fission spectrum in air and the other a moderated spectrum at the center of an irradiated cube of water.

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