Neutron production in the lunar subsurface from galactic cosmic ray nuclef

Shuya Ota, Lembit Sihver, Shingo Kobayashi, Naoyuki Y Amashit A, Nobuyuki Hasebe

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The neutron production ITom galactic cosmic ray (GCR) protons and alpha particles in the lunar subsurface was estimated using the three-dimensional Monte Carlo simulation code PHITS, together with GCR input spectra based on the BESS measurements. The PHITS simulations of equilibrium neutron density profiles in the lunar subsurface were compared with experimental data by Apollo 17 Lunar Neutron Probe Experiment. By use of accurate spectra and nuclear interaction models, our calculations successfully reproduced the data within the experimental error at the shallower region than 300 g/cm2 However, our calculation was up to 30% higher in the deeper region.

    Original languageEnglish
    Title of host publicationAstroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 11th Conference
    Pages719-723
    Number of pages5
    Publication statusPublished - 2010
    Event11th International Conferences on Advanced Technology and Particle Physics, ICATTP 2009 - Como
    Duration: 2009 Oct 52009 Oct 9

    Other

    Other11th International Conferences on Advanced Technology and Particle Physics, ICATTP 2009
    CityComo
    Period09/10/509/10/9

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Nuclear and High Energy Physics

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  • Cite this

    Ota, S., Sihver, L., Kobayashi, S., A, N. Y. A., & Hasebe, N. (2010). Neutron production in the lunar subsurface from galactic cosmic ray nuclef. In Astroparticle, Particle and Space Physics, Detectors and Medical Physics Applications - Proceedings of the 11th Conference (pp. 719-723)