Effective Alpha Activity and Self-Absorption Alpha Range in238PuO2Microspheres
- 1 September 1970
- journal article
- research article
- Published by Taylor & Francis in Nuclear Applications and Technology
- Vol. 9 (3) , 434-438
- https://doi.org/10.13182/nt70-a28798
Abstract
The self-absorption alpha range for the 5.5-MeV alpha emission in 238PuO2 was determined to be 11.7 ± 0.2 μm by measurement of the effective activity on microspkerical sources of from 150 to 250 μm diameter. A function was derived and experimentally tested which related the fractional escape of the total alpha emission to the range-radius ratio of the microspherical source. An energy distribution function was also derived for the alpha emission from a microspherical source which agreed quite well with the experimentally determined spectrum above 1 MeV. It is suggested that the derwed function provides a more accurate description of the energy region below 1 MeV than the experimental data.Keywords
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