MEASUREMENT OF THE REACTIONS 17O(α,γ)21Ne AND 17O(α, n)20Ne AND THEIR IMPACT ON THE WEAK s PROCESS

被引：0

作者：

Best, A. ^{[1
]}

Gorres, J. ^{[1
]}

Beard, M. ^{[1
]}

Couder, M. ^{[1
]}

Deboer, R. ^{[1
]}

Falahat, S. ^{[1
,2
]}

Kontos, A. ^{[1
]}

Kratz, K. -L. ^{[2
]}

Leblanc, P. J. ^{[1
]}

Li, Q. ^{[1
]}

O'Brien, S. ^{[1
]}

Talwar, R. ^{[1
]}

Tan, W. ^{[1
]}

Uberseder, E. ^{[1
]}

Wiescher, M. ^{[1
]}

Guray, R. T. ^{[3
]}

Ozkan, N. ^{[3
]}

Sonnabend, K. ^{[4
]}

机构：

[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[2] Johannes Gutenberg Univ Mainz, D-55122 Mainz, Germany

[3] Kocaeli Univ, Dept Phys, TR-41380 Kocaeli, Turkey

[4] Goethe Univ Frankfurt, Inst Appl Phys, D-60325 Frankfurt, Germany

来源：

CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS | 2013年

基金：

美国国家科学基金会;

关键词：

s process; neutron poison; R matrix; THERMONUCLEAR REACTION-RATES; PROCESS NUCLEOSYNTHESIS; MASSIVE STARS;

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The ratio of the reaction rates of the competing channels O-17(alpha, gamma)Ne-21 and O-17(alpha, n)Ne-20 determines the efficiency of O-16 as a neutron poison in the weak s process. We present results of the first measurement of the reaction O-17(alpha, gamma)Ne-21 and an improved study of the reaction O-17(alpha, n)Ne-20, including an independent measurement of the O-17(alpha, n(1))Ne-20 channel and a simultaneous R-Matrix fit to both the n(o) and the n(1) channels. The impact of the new data on the weak s process is discussed.

引用

页码：320 / 325

页数：6

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