Physics
Scientific paper
Nov 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phrvl..79.3845s&link_type=abstract
Physical Review Letters, Volume 79, Issue 20, November 17, 1997, pp.3845-3848
Physics
23
Scientific paper
The 28Si\(α,8He\)24Si reaction has been used to measure the energies of the first two excited states in 24Si. The excitation energies were found to be 1.879+/-0.011 and 3.441+/-0.010 MeV. These data allow for the first time the calculation of the stellar reaction rate of 23Al\(p,γ\)24Si on the basis of experimental information. This reaction is of considerable interest, since it might lead to a decrease of the 22Na production in nova explosions, and solve the discrepancy between the 22Na yield predictions of nova models and recent COMPTEL observations. We show, however, that the temperatures and densities required for a significantly reduced 22Na yield are not reached in current nova models.
Bacher Axel
Berg Georg P. A.
Black T. C.
Choi Sangkook
Foster Caroline
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