Lunar neutron leakage fluxes as a function of composition and hydrogen content

Details Lunar neutron leakage fluxes as a function of composition and hydrogen content Lunar neutron leakage fluxes as a function of composition and hydrogen content

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991georl..18.2157f&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 18, Nov. 1991, p. 2157-2160. Research supported by DOE.

Physics

21

Hydrogen, Lunar Composition, Lunar Surface, Neutron Flux Density, Regolith, Absorption Cross Sections, Radiation Counters, Rare Earth Elements, Remote Sensing, Thermal Neutrons

Scientific paper

Areas of the moon that might have enhanced concentrations of hydrogen are discussed. The fluxes of thermal, epithermal, and fast neutrons escaping from the lunar surface were calculated for eight different compositions and several hydrogen contents. These flux ratios depend on composition and are very sensitive to the hydrogen content. Their measurement using flight-proven techniques from lunar orbit should allow detection and identification of hydrogen residing in either permanently shaded cold traps near the lunar poles or mature regoliths. Knowledge of composition, especially of Fe and Ti, improves the thresholds for hydrogen detection and also could allow identification of Gd and Sm.

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