{sup 26}Al(n,p){sup 26}Mg and {sup 26}Al(n,{alpha}){sup 23}Na cross sections from thermal energy to approximately 50 keV
- Los Alamos National Lab., NM (United States)
- Joint Institute for Nuclear Research, Dubna (Russian Federation); and others
Understanding the origin of {sup 26}Al is important because it is one of the very few radioactive products of stellar nucleosynthesis to be observed directly by {gamma}-ray telescopes. {sup 26}Al has also been observed indirectly as a {sup 26}Mg anomaly in some meterorites. The {sup 26}Al(n,p){sup 26}Mg and {sup 26}Al(n,{alpha}){sup 23}Na reactions are thought to be the major means for the destruction of {sup 26}Al in some astrophysical environments, so a knowledge of the cross sections for these reactions is important for a better understanding of the origin of {sup 26}Al. The authors have measured the {sup 26}Al(n,p{sub 1}){sup 26}Mg and {sup 26}Al(n,{alpha}{sub 0}){sup 23}Na cross sections from thermal energy to approximately 50 keV. Most of this energy range has not been explored by previous measurements. The measurements were made at the white neutron source of the Manuel Lujan, Jr. Neutron Scattering Center (LANSCE) using a {Delta}E-E solid-state detector telescope. Several resonances were observed. This data will be compared to previous measurements and the effect of the new data on the calculated nucleosynthesis of {sup 26}Al will be discussed.
- OSTI ID:
- 243704
- Report Number(s):
- CONF-9304297--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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