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- Title
A cautionary tale: The Coulomb modified ANC for the 1/2<sup>+</sup><sub>2</sub> state in <sup>17</sup>O.
- Authors
Keeley, N.; Kemper, K. W.; Rusek, K.
- Abstract
We discuss the impact of the uncertainty (±8<inline-graphic></inline-graphic> keV) in the excitation energy of the astrophysically important 6.356 MeV 1/22+<inline-graphic></inline-graphic> state of 17O on the precision with which the Coulomb reduced ANC (C˜<inline-graphic></inline-graphic>) for the 〈17O(1/22+)|13C+α〉<inline-graphic></inline-graphic> overlap can be extracted from direct reaction data. We find a linear dependence of C˜2<inline-graphic></inline-graphic> on the binding energy, the value extracted varying by a factor of 4 over the range E ex =6.356-6.348<inline-graphic></inline-graphic> MeV. This represents an intrinsic limit on the precision with which C˜2<inline-graphic></inline-graphic> can be determined which cannot be improved unless or until the uncertainty in E ex <inline-graphic></inline-graphic> is reduced.
- Subjects
PARTICLES (Nuclear physics); COULOMB functions; BOUND states; IONIZATION (Atomic physics); CHEMICAL reactions
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2018, Vol 54, Issue 5, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/i2018-12507-5