Total Body γ-Ray Counting of Pu239 in Beagles
- 1 December 1962
- journal article
- research article
- Published by Wolters Kluwer Health in Health Physics
- Vol. 8 (6) , 777-780
- https://doi.org/10.1097/00004032-196212000-00037
Abstract
The infrequent γ-rays produced in the radioactive decay of Pu239 have been used to assay the plutonium content of living dogs. Unlike the more abundant 17-keV X-rays that are almost completely absorbed within a large animal's body, the γ-rays at 100 and 380 keV can be employed in the measurement of Pu239 in the skeleton. Beagles containing 0.1–28 µc of Pu239 were positioned in an arc 33 cm from an 8 × 4 in. NaI(Tl) detector inside a steel room with 6 in. thick walls. For counting periods of 30 min, mean deviations of 0.6 µc of Pu239 at 100 keV and 2.1 µc of Pu239 at 380 keV were obtained.Keywords
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