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Report on Meteorite Research. NO. 57. The Relative Production Cross Sections for He$sup 3$ and Ne$sup 21$ From Mg, Si, S, and Fe in Stone Meteorites; BERICHTE AUS DER METEORITNEFORSCHUNG. NO. 57. DIE RELATIVEN PRODUKTIONSQUERSCHNITTE FUR $sup 3$Ne AUS Mg, Si, S UND Fe IN STEINMETEORITEN

Technical Report ·
OSTI ID:4103341
; ; ; ;
With various mineral separation methods, including the newly developed technique of specific solvents, very pure fractions of metallic iron, troilite, olivine, and pyroxene were separated from the Holbrook meteorite. Helium and neon were extracted from those minerals. The measurements allowed a determination of the relative production rates of He/sup 3/ and the neon isotopes by cosmic rays in iron, sulfur, magnesium, and silicon. The results enable the calculation of the relative production rates of these isotopes in all kinds of meteorites whatever their chemical composition. The ratio of the relative production rates of Ne/sup 21/ from Mg and Si is 1.8 plus or minus 0.4. Therefore, it can be concluded that the variations of the He/sup 3//Ne/sup 21/ ratio in stone meteorites can not be explained by variations in their chemical composition, at least not for the normal chondrites. (auth)
Research Organization:
Max-Planck-Institut fur Chemie, Mainz
NSA Number:
NSA-18-008976
OSTI ID:
4103341
Report Number(s):
NP-13497
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ASTROPHYSICS
COSMIC RADIATION
CROSS SECTIONS
ELEMENTS
HELIUM
HELIUM 3
INTERACTIONS
IRON
IRON SILICATES
IRON SULFIDES
MAGNESIUM
MAGNESIUM SILICATES
MEASURED VALUES
METEORITES
MINERALS
NEON
NEON 21
NUMERICALS
OLIVINE
PHYSICS
PRODUCTION
PYROXENES
QUALITATIVE ANALYSIS
SEPARATION PROCESSES
SILICATES
SILICON
SULFUR
TROILITE
VARIATIONS