期刊
JOURNAL OF RADIATION RESEARCH
卷 63, 期 SUPPL 1, 页码 I16-I20出版社
OXFORD UNIV PRESS
DOI: 10.1093/jrr/rrac032
关键词
sprayed neutron-activated Mn-56 powder; laboratory animals; dosimetry of external gamma-irradiation; radiophotoluminescence glass dosimeters
资金
- KAKENHI [26257501, 19H01149]
Experimental animals exposed to neutron-activated Mn-56 powder have higher internal radiation doses compared to external radiation doses.
Estimates of external absorbed dose in experimental animals exposed to sprayed neutron-activated Mn-56 powder are necessary for comparison with internal absorbed doses estimated under the same exposure conditions, which is required for a correct interpretation of the observed biological effects. It has been established that the measured dose of external absorbed dose as a result of gamma irradiation range 1-15 mGy, which is order of magnitude less than the maximal dose of internal gamma and beta irradiation of the whole body of the same experimental animals irradiated under the same conditions: according to the available literature data, the maximal values of absorbed dose of internal gamma-beta irradiation of the whole body are in the range of 330 mGy-1200 mGy for mice and 100 mGy-150 mGy for rats. It is concluded that under the conditions of experiments with dispersed neutron-activated powder (MnO2)-Mn-56, internal gamma-beta irradiation of experimental animals is the main factor of radiation exposure compared to external gamma irradiation.
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