EVALUATION OF A THERMOLUMINESCENT DOSIMETER FOR PERSONNEL MONITORING IN THE NUCLEAR-RADIATION ENVIRONMENT

Authors
  1. Johnson, F.A.
  2. McGowan, S.
  3. Gravelle, R.A.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
Efforts to improve the responses of phosphor/polyethylene TLDs to neutrons in the 1-MeV range have been only partially successful. Some increases in response have resulted from reduction of phosphor grain size and substitution of CaSO4:Tm with CaF2:Mn or CaF2:Dy. Reasons for the continuing low response are not fully understood. Calculated responses of the TLDs, when located on the body, show a closer correlation with the dose received by the bone marrow as a result of exposure to a weapon spectrum than is evident for the case of flat-response dosimeters. However the TLDs exhibit a greater difference in their response to a weapon spectrum as compared with that to a pure gamma spectrum than is the case for a flat-response dosimeter. The disparity becomes even larger when the dose measured by the dosimeters is expressed in terms of the biologically effective dose absorbed in the bone marrow.
Report Number
883 —
Date of publication
15 Sep 1983
Number of Pages
24
DSTKIM No
85-00911
CANDIS No
45738
Format(s):
Hardcopy;Originator's fiche received by DSIS

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