MCNPX benchmark for cosmic ray interactions with the Moon

Details MCNPX benchmark for cosmic ray interactions with the Moon MCNPX benchmark for cosmic ray interactions with the Moon

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgre..11106004m&link_type=abstract

Journal of Geophysical Research, Volume 111, Issue E6, CiteID E06004

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Computation

15

Oceanography: General: Numerical Modeling (0545, 0560), Computational Geophysics: Model Verification And Validation, Planetary Sciences: Solar System Objects: Moon (1221)

Scientific paper

The MCNPX radiation transport code is used to simulate cosmic ray interactions within the Moon. Accurate source, geometric, and physics models are developed to successfully benchmark neutron density results with Apollo 17 measurements. The peak of the MCNPX lunar neutron density profile is shown to be within a few percent of the measured value, using a galactic cosmic rays modulation parameter that is consistent with the timeframe of the Apollo 17 mission. Sensitivity of the density profile to various input parameters and physics options is considered. Details of the simulation input are provided, along with neutron production and flux results, to facilitate additional benchmark efforts in the future.

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