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Measurement of the 18Ne(α,p0) 21Na reaction cross section in the burning energy region for x-ray bursts.
Salter, P J C; Aliotta, M; Davinson, T; Al Falou, H; Chen, A; Davids, B; Fulton, B R; Galinski, N; Howell, D; Lotay, G; Machule, P; Murphy, A StJ; Ruiz, C; Sjue, S; Taggart, M; Walden, P; Woods, P J.
Affiliation
  • Salter PJ; SUPA, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
Phys Rev Lett ; 108(24): 242701, 2012 Jun 15.
Article in En | MEDLINE | ID: mdl-23004266
The 18Ne(α,p) 21Na reaction provides one of the main HCNO-breakout routes into the rp process in x-ray bursts. The 18Ne(α,p0) 21Na reaction cross section has been determined for the first time in the Gamow energy region for peak temperatures T∼2 GK by measuring its time-reversal reaction 21Na(p,α) 18Ne in inverse kinematics. The astrophysical rate for ground-state to ground-state transitions was found to be a factor of 2 lower than Hauser-Feshbach theoretical predictions. Our reduced rate will affect the physical conditions under which breakout from the HCNO cycles occurs via the 18Ne(α,p) 21Na reaction.
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Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: Phys Rev Lett Year: 2012 Document type: Article Affiliation country: United kingdom Country of publication: United States
Search on Google
Collection: 01-internacional Database: MEDLINE Type of study: Prognostic_studies Language: En Journal: Phys Rev Lett Year: 2012 Document type: Article Affiliation country: United kingdom Country of publication: United States