A FILM TECHNIQUE FOR MEASURING THE EXPOSURE DOSE FROM PLUTONIUM
The electromagnetic radiations from plutonium are considered in three effective energy groups; x-rays of 17 kev, gamma -rays of 60 kev, and gamma - rays of energies greater than 400 kev. The low penetrating power of the x-rays is demonstrated, using a water phantom. Because of the ease with which they are absorbed, the testes are considered the critical organ. The measurement of all three energy groups with monitoring film is complicated by the energy dependence of the photographic emulsion used. The energy dependence of DuPont Type 502 emulsion is shown to peak in sensitivity at about 45 kev. The effect of shielding the film, as in a film badge, improves the energy dependence but limits the minimum energy which can be measured to about 60 kev. The shielding features in the Hanford Film Badge permit measurement of the exposure dose of the three energy groups. From a set of generalized equations relating exposure dose and net density, expressions are derived for the dose due to each energy group. (auth)
- Research Organization:
- General Electric Co., Richland, Wash.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-003675
- OSTI ID:
- 4211331
- Journal Information:
- Health Physics (England), Journal Name: Health Physics (England) Vol. Vol: 2; ISSN HLTPA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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