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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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Prepare for the 2025 Nuclear PE Exam with ANS guides
The next opportunity to earn professional engineer (PE) licensure in nuclear engineering is this fall, and now is the time to sign up and begin studying with the help of materials like the online module program offered by the American Nuclear Society.
T. E. Murley, I. Kaplan
Nuclear Science and Engineering | Volume 31 | Number 2 | February 1968 | Pages 207-214
Technical Paper | doi.org/10.13182/NSE68-A18232
Articles are hosted by Taylor and Francis Online.
A method is presented for calculating the energy spectrum of fission neutrons slowing down in a homogeneous medium of arbitrary composition. The integral equation for ø(E) is solved by an iterative method, yielding a sum of partial spectra which are then summed to obtain a very simple expression for the slowing down spectrum. The effects of absorption and inelastic scattering are accounted for in an approximate manner. The fundamental-mode spectrum for a typical fast-reactor composition was calculated by this method, and the results agree favorably with the central spectrum from a 26-group diffusion calculation. A further application is given for using this method to generate weighting spectra for computing average multigroup cross sections.
