Report on Meteorite Research. No. 54. Helium and Neon Isotopes in Iron Meteorites; BERICHTE AUS DER METEORITENFORSCHUNG. NO. 54. HELIUM- UND NEONISOTOPE IN EISENMETEORITEN

Technical Report · Tue Jan 01 04:00:00 EST 1963

OSTI ID:4125084

Hintenberger, H; Waenke, H

The helium and neon content of 22 iron meteorites as well as the isotopic composition of the rare gases have been measured. Definite relations were found between the amounts of the cosmic ray-produced isotopes He/sup 3/, He/ sup 4/, and Ne/sup 21/ and also for their ratios. A rough correlation between the mass of the meteorite and the depth'' of the sample has been found; a correlation for the He/sup 3//He/sup 4/ and the He/sup 4// Ne/sup 21/ ratios also exists. The following relationship holds for 19 of the 21 meteorites: He/sup 3// He/sup 4/ = 0.166 + 174 ( SIGMA Ne/ SIGMA He) plus or minus 0.0l8. The only exceptions are the meteorites Braunau and Colomera. Because these exceptions only show up in diagrams in which the values for He/sup 3/ are included, it is assumed that both these meteorites, as well as perhaps also the meteorite Morradal, have lost part of their He/sup 3/. 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-18-008973
• OSTI ID: 4125084
• Report Number(s): NP-13494
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ASTROPHYSICS
COSMIC RADIATION
DIAGRAMS
DIFFUSION
HEATING
HELIUM 3
HELIUM 4
HIGH TEMPERATURE
INTERACTIONS
IRON
LOSSES
MEASURED VALUES
METEORITES
NEON 21
NEON ISOTOPES
ORBITS
PHYSICS
PRODUCTION
QUANTITY RATIO
RARE GASES
SUN
THICKNESS
TRITIUM