Supernovae as sources of interstellar diamonds

Details Supernovae as sources of interstellar diamonds Supernovae as sources of interstellar diamonds

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.196..117n&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 196, no. 1, p. 117-123.

Astronomy and Astrophysics

Astrophysics

31

Cosmic Plasma, Diamonds, Hydrocarbons, Interstellar Matter, Supernovae, Crystal Structure, Graphite, Particle Size Distribution

Scientific paper

Small hydrocarbon grains in the vicinity of a supernova could be annealed by the absorption of several far-ultraviolet photons to produce the tiny diamonds found in meteorites. These freshly-synthesized diamond grains would be bombarded by the heavy ions and neutrals in the supernovae outflow and would thereby acquire the distinctive noble-gas isotopic signature by which they were first isolated. Only diamonds formed relatively close to supernovae would acquire such a signature, since grains formed farther out would be subjected to a much diluted and less energetic plasma environment.

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