Al-26 depth profile in Apollo 15 drill core

Details Al-26 depth profile in Apollo 15 drill core Al-26 depth profile in Apollo 15 drill core

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984e%26psl..70..164n&link_type=abstract

Earth and Planetary Science Letters (ISSN 0012-821X), vol. 70, no. 2, Oct. 1984, p. 164-168. NSF-supported research.

Computer Science

30

Apollo 15 Flight, Core Sampling, Galactic Cosmic Rays, Lunar Soil, Aluminum 26, Mass Spectroscopy, Van De Graaff Accelerators, Vertical Distribution

Scientific paper

Accelerator mass spectrometry is used in a study of galactic cosmic ray production profiles based on cosmic ray-produced Al-26 in the Apollo 15 long core. The results, which are in general agreement with earlier nondestructive counting data, are of significantly higher precision, yet systematically lower. The half-attenuation length for Al-26 production is presently calculated to be 122 g/sq cm, after normalizing the data to average chemical composition.

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