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THE CALCULATION OF THERMAL NEUTRON SPECTRA BY PERTURBATION THEORY

Technical Report ·
OSTI ID:4087417
A method of treating neutron thermalization problems by perturbation theory is discussed. This involves using the eigenfunctions of the scattering kernel for the moderator. Two simple examples are considered: the timedecay of a pulse of neutrons in a block of moderating material and the spectrum in an infinite homogeneous medium. In the case of moderation by a monatomic gas, analytical solutions are obtained using Laguerre polynomials. Extension of the method to more complex problems is discussed. (auth)
Research Organization:
United Kingdom Atomic Energy Authority. Research Group. Atomic Energy Research Establishment, Harwell, Berks, England
NSA Number:
NSA-15-009940
OSTI ID:
4087417
Report Number(s):
AERE-R-3400
Country of Publication:
United Kingdom
Language:
English

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