Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 27 / Number 3 / Pages 581-585
E. E. Lewis, R. Pfeffer
Nuclear Science and Engineering / Volume 27 / Number 3 / Pages 581-585
Format:electronic copy (download)
A formalism based on the Dirac chord method is extended from a previous paper to provide an analytical method for determining the properties of small fission-fragment sources of arbitrary convex geometry. The fragment escape probabilities, energy spectra, and energy deposition fractions are determined for spherical, slab, and cylindrical uranium-dioxide sources, using an energy-loss model that contains initial-energy spectra and range-energy relations for 42 fragment species. For comparison, calculations are also made, using two simplified energy-loss models. Finally, a method is given for generalizing the results to sources containing materials other than uranium dioxide.
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