NASA NTRS · 19740040198
Neutrons in the moon
Abstract
Neutron fluxes for energies between 15 MeV and thermal at depths of 0 to 300 g/sq cm in the moon are calculated by the discrete ordinate mathod with the ANISN code. With the energy spectrum of Lingenfelter et al. (1972). A total neutron-production rate for the moon of 26 plus or minus neutrons/sq cm sec is determined from the Ar-37 activity measurements in the Apollo 16 drill string, which are found to have a depth dependence in accordance with a neutron source function that decreases exponentially with an attenuation length of 155 g/sq cm.
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Kornblum, J. J., Fireman, E. L., Levine, M., Aronson, A.. 1973-01-01. Neutrons in the moon. https://ntrs.nasa.gov/citations/19740040198
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