Physics – Nuclear Physics
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvc..48..429z&link_type=abstract
Physical Review C (Nuclear Physics), Volume 48, Issue 1, July 1993, pp.429-432
Physics
Nuclear Physics
7
Beta Decay, Double Beta Decay, Electron And Muon Capture, Alpha Decay, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages
Scientific paper
The beta-delayed alpha-particle emission of 16N has been studied, with 16N nuclei produced using 80 MeV/nucleon 18O beams on 9Be targets. The 16N secondary nuclei were mass analyzed and separated from the reaction products using the Michigan State University A1200 isotope separator. A detector array, including four thin surface barrier detectors, a p-i-n diode, a Ge gamma-ray detector, and a two-dimensional position sensitive parallel plate avalanche counter, was used for implantation and study of the separated nuclei. A beta-decay branching ratio of (1.3+/-0.3)×10-5 to the 1- state at 9.6 MeV and a centroid of 2.35+/-0.05 MeV for the beta-delayed alpha-particle emission were measured. These results are essential for the analysis of a high sensitivity measurement at Yale University of the low-energy beta-delayed alpha-particle emission of 16N, and for understanding the 12C(α,γ)16O reaction in the helium burning process in massive stars.
Beard K. B.
France Ralph Hayward III
Gai Marco
Kryger R. A.
Lai K. S.
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