First direct measurement of resonance strengths in O17(α,γ)21Ne
Abstract
The reaction O17(α,γ)21Ne has been measured by in-beam γ spectroscopy for the first time in the energy range Eα=750-1650 keV using highly enriched anodized Ta2(17O)5 targets. Resonances were found at Eα= 1002, 1386, and 1619 keV. Their strengths and primary γ-ray branchings are given. The new results exclude the low reaction rate of Descouvemont and support the rate of Caughlan and Fowler. Implications for the neutron poisoning efficiency of O16 in the weak s-process are discussed.
- Publication:
-
Physical Review C
- Pub Date:
- May 2011
- DOI:
- 10.1103/PhysRevC.83.052802
- arXiv:
- arXiv:1105.3096
- Bibcode:
- 2011PhRvC..83e2802B
- Keywords:
-
- 26.20.Kn;
- 24.30.-v;
- 23.20.Lv;
- 25.55.-e;
- s-process;
- Resonance reactions;
- gamma transitions and level energies;
- <sup>3</sup>H- <sup>3</sup>He- and <sup>4</sup>He-induced reactions;
- Nuclear Experiment
- E-Print:
- 5 pages, 5 figures, 2 tables, Accepted for publication in Phys. Rev. C