A Simulator for Gamma-ray Exposure from Nuclear Fallout
- 1 July 1961
- journal article
- research article
- Published by Wolters Kluwer Health in Health Physics
- Vol. 6 (1) , 41-45
- https://doi.org/10.1097/00004032-196107000-00007
Abstract
A device is described by which laboratory animals may be irradiated at dose rates which are varying in a way similar to those from the gamma-radiation from radioactive fallout. The animals are moved relative to a fixed source of cobalt-60 in such a way that the dose-rate to which the animals are exposed varies as a power function of time. Experimental verification of the theory of the device is presented. A method of achieving a range of total exposure doses in a particular time interval is described. The LD50/30 for mice exposed to simulated fallout of 96 hr duration was 1109 r compared to 1008 r when the dose was delivered at a constant dose rate over the same time interval, or 553 r when it was delivered at 65/min using a 250 kV X-ray source.Keywords
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