Direct measurement of the astrophysical reaction 14O(α,p)17F

Details Direct measurement of the astrophysical reaction 14O(α,p)17F Direct measurement of the astrophysical reaction 14O(α,p)17F

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004nupha.746..113n&link_type=abstract

Nuclear Physics A, Volume 746, p. 113-117.

Physics

Nuclear Physics

9

Scientific paper

The stellar reaction 14O(α,p)17F, that critically determines the onset of the high-temperature rp-process, has been studied through a direct measurement with a low-energy radioactive 14O beam and a gaseous helium target cooled down to 30 K. The reaction cross section was measured directly by means of a thick target technique in the energy range of Ec.m.(14O+α) = 0.8-3.8 MeV. The 14O(α,p)17F* reaction leading to the first excited state in 17F was clearly observed for the first time, suggesting an increase of about 50% for the stellar reaction rate through resonance at around 7.1 MeV in 18Ne.

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