The anthropic significance of the existence of an excited state of C-12

Details The anthropic significance of the existence of an excited state of C-12 The anthropic significance of the existence of an excited state of C-12

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.340..281l&link_type=abstract

Nature (ISSN 0028-0836), vol. 340, July 27, 1989, p. 281-284. Research supported by NSF and University of Illinois.

Physics

22

Atomic Energy Levels, Carbon 12, Cosmology, Nuclear Fusion, Stellar Physics, Asymptotic Giant Branch Stars, Stellar Interiors, Stellar Mass, Supernovae

Scientific paper

Were it not for the presence of an excited state of C-12 at 7.6 MeV, at the endpoint of the triple-alpha reaction, it would be difficult for stars to manufacture carbon and heavier elements. Calculations using modified triple-alpha rates test the sensitivity of stellar nucleosynthesis to the exact position of this excited state, and allow an empirical assessment of its importance in the anthropic principle in cosmology.

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