Cosmogenic radionuclides in stone meteorites

Technical Report · Sat May 01 04:00:00 EDT 1976

OSTI ID:7216470

Cressy, Jr, P J

This document presents the techniques and compilation of results of cosmogenic /sup 26/Al measurements at Goddard Space Flight Center on 91 samples of 76 stone meteorites. Short-lived radionuclides, including /sup 22/Na, /sup 46/Sc, /sup 54/Mn, and Co-60, were measured in 13 of these meteorites. About one-third of these data have not previously been published. The results are discussed briefly in terms of depletion of /sup 26/Al and natural potassium due to weathering; possible exposure of several chondrites to an unusually high cosmic-ray flux; comparison of /sup 26/Al, /sup 22/Na, /sup 46/Sc, and /sup 54/M/sub 17/ in chondrites with the spallation /sup 22/Ne//sup 21/Ne ratio as a shielding indicator; and comparison of /sup 26/Al--/sup 22/Ne//sup 21/Ne data for achondrite classes with the chondrite trend.

• Research Organization: National Aeronautics and Space Administration, Greenbelt, MD (USA). Goddard Space Flight Center
• OSTI ID: 7216470
• Report Number(s): N-76-25115; NASA-TN-D-8241; G-7658
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACHONDRITES
ALKALI METAL ISOTOPES
ALUMINIUM 26
ALUMINIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHEMICAL COMPOSITION
CHEMISTRY
CHONDRITES
COBALT 60
COBALT ISOTOPES
COSMOCHEMISTRY
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
MANGANESE 54
MANGANESE ISOTOPES
METEORITES
MINUTES LIVING RADIOISOTOPES
NEON ISOTOPES
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SCANDIUM 46
SCANDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SODIUM 22
SODIUM ISOTOPES
STONE METEORITES
YEARS LIVING RADIOISOTOPES