Analytic expression for epithermal neutron spectra amplitudes as a function of water content

Details Analytic expression for epithermal neutron spectra amplitudes as a function of water content Analytic expression for epithermal neutron spectra amplitudes as a function of water content

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24..429d&link_type=abstract

In Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F p 429-430 (SEE N94-12015 01-91)

Computer Science

Moisture Content, Neutron Spectra, Thermal Neutrons, Elastic Scattering, Inelastic Scattering, Lunar Composition, Oxygen, Silicon

Scientific paper

The epithermal portion of an equilibrium neutron spectrum in a planetary body is a function of the water content of its material. The neutrons are produced at high energies but are moderated by elastic and inelastic scattering until they either are captured by surrounding nuclei or escape. We have derived an expression that explicitly shows the dependance of epithermal neutron spectra on water content. Additionally, we compared its predictions to calculations done by Boltzman transport code for infinite media for silicon, oxygen, and a possible lunar composition, and we have obtained very good agreement.

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