HELIUM AND NEON ISOTOPES IN IRON METEORITES

Journal Article · Sat Feb 01 04:00:00 EST 1964 · Z. Naturforsch

OSTI ID:4017776

Hintenberger, H; Waenke, H

The helium and neon content of 22 iron meteorites as well as the isotopic compositions of the rare gases were measured. Definite relations were found between the amounts of the cosmic-ray-produced isotopes /sup 3/He, /sup 4/ He, and /sup 21/Ne and also for their ratios. A rough correlation between the mass of the meteorite and the depth'' of the sample was found; a correlation for the /sup 3/He//sup 4/He and the /sup 4/He//sup 21/N e ratios also exists. The following relationship holds for 19 of the 21 meteorites: /sup 3/He//sup 4/He = 0.166 + 174 ( SIGMA Ne/ SIGMA He) plus or minus 0.018. The only exceptions are the meteorites Braunau and Colomera. Because these exceptions only show up in diagrams in which the values for /sup 3/He are included, it was assumed that both these meteorites, as well as perhaps also the meteorite Morradal, lost part of their /sup 3/He. This might be explained by a diffusive loss of tritium during times of higher temperatures of the meteoritic bodies, probably due to a closer approach of these meteorites to the sun. (auth)

• Research Organization: Max-Planck-Institut fur Chemie, Mainz
• NSA Number: NSA-18-020205
• OSTI ID: 4017776
• Journal Information: Z. Naturforsch, Journal Name: Z. Naturforsch Vol. Vol: 19a
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

COSMIC RADIATION
DIAGRAMS
DIFFUSION
GEOLOGY AND MINERALOGY
HELIUM 3
HELIUM 4
HIGH TEMPERATURE
IRON
MEASURED VALUES
METEORITES
NEON 21
RARE GASES
SUN
TRITIUM