New energy for the 133-keV resonance in the 23Na(p,γ) 24Mg reaction and its impact on nucleosynthesis in globular clusters
Journal Article
·
· Physical Review C
- North Carolina State Univ., Raleigh, NC (United States); Triangles Univ. Nuclear Lab., Durham, NC (United States); Ohio Univ., Athens, OH (United States); North Carolina State University
- North Carolina State Univ., Raleigh, NC (United States); Triangles Univ. Nuclear Lab., Durham, NC (United States); European X-ray Free Electron Laser GmbH, Schenefeld (Germany)
- North Carolina State Univ., Raleigh, NC (United States); Triangles Univ. Nuclear Lab., Durham, NC (United States)
Globular cluster stars exhibit star-to-star anticorrelations between oxygen and sodium in their atmospheres. An improved description of the sodium-destroying 23Na +p reaction rates is essential to understanding these observations. We present an energy analysis of 24Mg states based on a new measurement of the 23Na(3He, d) 24Mg reaction. A key resonance in 23Na(p, γ) 24Mg is found to be at $$E$$ $$^{c.m.}_{r}$$ = 133(3) keV, 5 keV lower than previously adopted. This finding has a dramatic effect on the 23Na(p, γ) 24Mg reaction rate, increasing it by a factor of 2 for the recommended rate. Furthermore, the nucleosynthesis impact of this change is investigated.
- Research Organization:
- North Carolina State Univ., Raleigh, NC (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- FG02-97ER41042; SC0017799
- OSTI ID:
- 1821590
- Journal Information:
- Physical Review C, Journal Name: Physical Review C Journal Issue: 3 Vol. 104; ISSN 2469-9985
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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