Supernovae as sources of interstellar diamonds |
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| Authors: | Joseph A Nuth III John E Allen Jr |
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| Institution: | (1) Astrochemistry Branch, NASA/Goddard Space Flight Center, Greenbelt, MD, USA |
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| Abstract: | 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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