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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