This technical report describes computational research in which Applied Research Associates, Inc. (ARA) estimated the absorbed radiation dose to a computational phantom from incident neutron spectra in a survivable zone. The method estimates the absorbed dose to four specific organ systems; 1) spleen, 2) small intestine wall, 3) bones, and 4) lungs. The organ absorbed dose accounts for the initial neutrons and their secondary radiations. This research is important in understanding the prompt neutron dose contribution to the overall whole-body dose for personnel in the survivable zone outside of the immediate blast and thermal effects. Personnel may survive the nuclear detonation within the survivable zone and have radiation health effects that require medical assistance and resources.
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