Measurement of the internal pair emission branch of the 7.654-MeV state of 12C, and the rate of the stellar triple-α reaction

Details Measurement of the internal pair emission branch of the 7.654-MeV state of 12C, and the rate of the stellar triple-α reaction Measurement of the internal pair emission branch of the 7.654-MeV state of 12C, and the rate of the stellar triple-α reaction

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phrvc..15.1072r&link_type=abstract

Physical Review C (Nuclear Physics), Volume 15, Issue 3, March 1977, pp.1072-1079

Physics

Nuclear Physics

6

Scientific paper

The internal pair decay of the O+ 7.65-MeV state of 12C has been observed in coincidence with inelastic protons from 12C(p, p')12C(7.65), using a plastic scintillator of essentially 4π sr solid angle. The branching ratio measured, ΓπΓ=(6.0+/-1.1)×10-6, is in excellent agreement with the previous measurement by Alburger, and reduces the uncertainty in the stellar triple-α reaction rate by almost a factor of 2. Implications for the astrophysical production of 12C and 16O are discussed. NUCLEAR STRUCTURE 12C, 7.654-MeV state; measured ΓπΓ. Stellar helium burning.

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