Thermonuclear {sup 25}Al(p,{gamma}){sup 26}Si reaction rate in classical novae and Galactic {sup 26}Al
- Department of Physics, University of Washington, Seattle, Washington 98195 (United States)
The nuclear physics uncertainty associated with the production of the Galactic {beta}-delayed {gamma}-ray emitter {sup 26}Al in classical novae is currently dominated by the uncertainty in the thermonuclear {sup 25}Al(p,{gamma}){sup 26}Si reaction rate. By combining the results of recent experiments with past work, the center-of-mass energy of the key J{sup {pi}}=3{sup +}, {sup 25}Al(p,{gamma}){sup 26}Si resonance is determined to be 412(2) keV, and a lower limit of {gamma}{sub p}/{gamma}{sub {gamma}}>5.6 is set for this resonance. The resulting large reduction in the {sup 25}Al(p,{gamma}){sup 26}Si rate uncertainty is expected to constrain uncertainties in the nova contribution to Galactic {sup 26}Al.
- OSTI ID:
- 21199642
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English