Transport processes on the lunar surface - Comparison of model calculations with radionuclides data

Details Transport processes on the lunar surface - Comparison of model calculations with radionuclides data Transport processes on the lunar surface - Comparison of model calculations with radionuclides data

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.6681l&link_type=abstract

Journal of Geophysical Research, vol. 87, Aug. 10, 1982, p. 6681-6691.

Astronomy and Astrophysics

Astronomy

11

Astronomical Models, Lunar Evolution, Lunar Surface, Radioactive Age Determination, Radioactive Isotopes, Transport Theory, Aluminum 26, Depth, Hypervelocity Impact, Lunar Core, Manganese Isotopes, Meteoritic Damage, Monte Carlo Method, Selenology

Scientific paper

Descriptions are given of the experimental methods used in determining Al-26 and Mn-53 activities and of the possible improvements that can be expected in the near future. The results obtained for the seven lunar core sections where both Al-26 and Mn-53 are measured with good depth definition are discussed. It is then shown how meteoritic impacts and the secondary effects they induce modify the Al-26 and Mn-53 activities in a core. Using a Monte Carlo method, 150 possible depositional histories for a core are generated; from these the resulting activity profiles for both Al-26 and Mn-53 are computed, using several possible SCR energy spectra. These model-generated profiles are then compared with the experimental profiles in the seven cores, and plausible scenarios for the depositional history of each of the cores are tentatively inferred.

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