Helium isotopic ratios in carbonaceous chondrites: Significant for the early solar nebula and circumstellar diamonds?

Busemann, H.; Baur, H.; Wieler, R.

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oai:oro.open.ac.uk:8341

Helium isotopic ratios in carbonaceous chondrites: Significant for the early solar nebula and circumstellar diamonds?

Authors: H. Busemann
H. Baur
R. Wieler
Publication date: 1 March 2001
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Abstract

Stepwise etching of acid-resistant residues from carbonaceous chondrites yields a new, extraordinarily low He isotopic ratio for phase Q that might represent early solar nebula composition. A much lower ratio possibly characterizes He-P3 from circumstellar diamonds

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oai:oro.open.ac.uk:8341

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