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Solar cosmic ray, solar wind, solar flare, and neutron albedo measurements, part CAll mineral detectors exposed on Apollo 16 had high surface track densities probably produced by a solar flare that occurred during the mission. The heavy ions followed a power law spectrum with exponent approximately 3 down to approximately 200 KeV/nucleon. The abundance of low-energy particle tracks observed in this flare may explain the high track densities observed in lunar dust grains. Pristine heavy-particle tracks in feldspar give long tracks. Shallow pits similar to those expected from extremely heavy solar wind ions were observed in about the expected number. Initial results give a low apparent value of neutron albedo relative to theory.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Burnett, D.
(California Inst. of Tech. Pasadena, CA, United States)
Hohenberg, C.
(Washington Univ. St. Louis, United States)
Maurette, M.
(CNRS Orsay, France)
Monnin, M.
(Clermont-Ferrand Univ. Pasadena, CA, United States)
Walker, R.
(California Inst. of Tech. Pasadena, CA, United States)
Wollum, D.
(California Inst. of Tech.)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Publication Information
Publication: NASA. Lyndon B. Johnson Space Center Apollo 16 Prelim. Sci. Rept.
Subject Category
Space Radiation
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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