Article ID Journal Published Year Pages File Type
8249900 Radiation Measurements 2018 31 Pages PDF
Abstract
The calculation of the spatial distribution of the radiation weighting factor for neutrons allowed us to estimate the distribution of the neutron equivalent dose inside the phantom. The maximal value of the neutron equivalent dose within the phantom reached 42, 24, and 15 pSv per one primary 100, 150, and 200 MeV proton, respectively, and occurred on the beam axis roughly at the half of the proton range. With respect to the proton dose, these maximal values of the neutron equivalent dose correspond to 2.1%, 1.3%, and 1.4% of the proton dose in the Bragg peak for these proton energies. Moreover, equivalent doses of secondary induced photons were more than 3 orders of magnitude lower that the neutron ones.
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Related Topics
Physical Sciences and Engineering Physics and Astronomy Radiation
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