Some time dependent aspects of fast neutron induced atomic cascades
- 1 January 1976
- journal article
- research article
- Published by Taylor & Francis in Radiation Effects
- Vol. 30 (3) , 147-157
- https://doi.org/10.1080/00337577608233056
Abstract
Analytical results are obtained for the time-energy distribution of neutrons and the associated displaced atoms slowing down in an amorphous medium according to a general force law. Explicit results are given for the inverse power law, and applications to hard-sphere and Coulomb scattering are discussed. Complete results are obtained for the steady state energy distribution of particles arising from a primary knock-on, and from a neutron initiated cascade. The speed of the slowing down process is assessed by calculating the slowing down time of particles. Two different concepts of slowing down time are discussed, one based upon a density average and the other on a slowing down density average. It is shown that the latter definition is physically more realistic and mathematically simpler.Keywords
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