Cosmogenic KR and Xe Made in the Moon from BR and I

Details Cosmogenic KR and Xe Made in the Moon from BR and I Cosmogenic KR and Xe Made in the Moon from BR and I

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27.1065r&link_type=abstract

Lunar and Planetary Science, volume 27, page 1065

Other

Iodine: Lunar, Krypton: Cosmogenic, Nuclides: Cosmogenic, Protons: Solar, Xenon: Cosmogenic

Scientific paper

Although generally rare in nature, the noble-gas elements krypton and xenon have many sources. Unraveling these sources and their isotopic compositions has been a goal of many research groups for decades. There are many types of sources, including primordial ones, radiogenic decay, solar emissions, and production in-situ by nuclear reactions induced by various energetic particles. The cosmogenic components are important in studies of the cosmic-ray exposure histories and in making corrections to measured compositions to get the other components. Pepin et al. recently used Xe and Kr in regolith soils to study the solar-wind component. Most data could be explained by known sources. However, there was a variable and often large excess of Xe-126 of unknown origin in many samples. We did calculations to see if this excess Xe-126 could have been made by solar-proton reactions with iodine on grain surfaces.

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