Beta-exposure in a neutron activation laboratory |
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Authors: | T J Belandi S Landsberger |
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Institution: | (1) University of Texas, Nuclear Engineering Teaching Laboratory, Pickle Research Campus, R-9000 Austin, Texas, 78712 USA;(2) University of Texas, Nuclear Engineering Teaching Laboratory, Pickle Research Campus, R-9000 Austin, Texas, 78712 USA |
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Abstract: | Summary In virtually all neutron activation analysis laboratories, researchers are given film badges known as thermoluminescence dosimeters
(TLD's) that are monitored on a monthly basis. Sometimes additional pocket dosimeters are worn to get a daily reading of exposure,
while in other instances ring badges are worn to assess beta doses. However, more than often little consideration is given
to beta-exposure rates that arise from the plethora of radionuclides produced in the many types of samples irradiated. A common
mistake is to assess gamma-exposures of activated samples that rely on the use of a beta-shield on the survey meter. Our experimental
results have shown that there are many high energy beta-particles from neutron activated samples that can easily penetrate
the beta-shield and thus give an underestimation of the total beta-exposure. |
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Keywords: | |
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