A new determination of the E1 amplitude of 12C(α,γ)16O at energies of astrophysical interest

Details A new determination of the E1 amplitude of 12C(α,γ)16O at energies of astrophysical interest A new determination of the E1 amplitude of 12C(α,γ)16O at energies of astrophysical interest

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..610..466g&link_type=abstract

NUCLEAR PHYSICS IN THE 21st CENTURY:International Nuclear Physics Conference INPC 2001. AIP Conference Proceedings, Volume 610,

Physics

Nuclear Physics

3H-, 3He-, And 4He-Induced Reactions, Hydrostatic Stellar Nucleosynthesis, 6<=A<=19

Scientific paper

The reaction 12C(α,γ)16O has a strong influence on both stellar evolution and nucleosynthesis after the helium burning stage in massive stars. The E1 amplitude of this astrophysical important reaction was measured in inverse kinematics using a 4He windowless gas target and an intense 12C ion beam in combination with an array of HPGe detectors. The results of this measurement were extrapolated to the relevant energy for helium burning (E0=300 keV) using the R-matrix formalism of nuclear reactions. The error on the extrapolated value was determined via a Monte Carlo procedure. The results of this experiment and of their extrapolation to E0 are presented and compared with previous data. .

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