Direct Measurement of the 23Na(α,p)26Mg Reaction Cross Section at Energies Relevant for the Production of Galactic 26Al

被引：20
|
作者：
Almaraz-Calderon, S. [1 ]
Bertone, P. F. [1 ]
Alcorta, M. [1 ]
Albers, M. [1 ]
Deibel, C. M. [2 ]
Hoffman, C. R. [1 ]
Jiang, C. L. [1 ]
Marley, S. T. [1 ]
Rehm, K. E. [1 ]
Ugalde, C. [1 ,3 ]
机构：
[1] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
[2] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
[3] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA
来源：
PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 15期
关键词：
THERMONUCLEAR REACTION-RATE; MASSIVE STARS; ALPHA; FE-60;
D O I：
10.1103/PhysRevLett.112.152701
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The 1809-keV gamma ray from the decay of Al-26(g) is an important target for gamma-ray astronomy. In the convective C/Ne burning shell of massive presupernova stars, the Na-23(alpha,p)Mg-26 reaction directly influences the production of Al-26. We have performed a direct measurement of the Na-23(alpha,p)Mg-26 reaction cross section at the appropriate astrophysically important energies. The stellar rate calculated in the present work is larger than the recommended rate by nearly a factor of 40 and could strongly affect the production of Al-26 in massive stars.
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页数：5
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