Spectroscopy of {sup 23}Al and {sup 27}P using the ({sup 7}Li,{sup 8}He) reaction and the implications for {sup 22}Na and {sup 26}Al nucleosynthesis in explosive hydrogen burning.
The proton-rich nuclei {sup 23}Al and {sup 27}P were studied using the {sup 24}Mg({sup 7}Li,{sup 8}He){sup 23}Al and {sup 28}Si({sup 7}Li,{sup 8}He){sup 27}P reactions, respectively. Several energy levels are observed in each nucleus. The mass excess of {sup 23}Al was measured to be 6.773(28) MeV and the mass excess of {sup 27}P was measured to be -0.670(41) MeV. The first excited state of {sup 23}Al has been resolved from the ground state for the first time at an excitation energy of E{sub x} = 0.550(20) MeV. The first excited state of {sup 27}P has been measured for the first time at an excitation energy of E{sub x} = 1.199(19) MeV. The astrophysical implications of these results for the reaction rates of {sup 22}Mg({rho},{gamma}){sup 23}Al and {sup 26}Si({rho},{gamma}){sup 27}P for the nucleosynthesis of {sup 22}Na and {sup 26}Al in Ne novae will be discussed.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; NSF
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 942964
- Report Number(s):
- ANL/PHY/JA-36298
- Journal Information:
- Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: 2 ; Aug. 2001 Vol. 64; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- ENGLISH
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