14C(α,γ) reaction rate

被引：15

作者：

Johnson, E. D. ^{[1
]}

Rogachev, G. V. ^{[1
]}

Mitchell, J. ^{[1
]}

Miller, L. ^{[1
]}

Kemper, K. W. ^{[1
]}

机构：

[1] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 04期

基金：

美国国家科学基金会;

关键词：

O-18; CAPTURE; STATES; PHASE; C-12; N-14;

D O I：

10.1103/PhysRevC.80.045805

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 C-14(alpha,gamma) reaction rate at temperatures below 0.3 GK depends on the properties of two near threshold resonances in O-18, the 1(-) at 6.198 MeV and the 3(-) at 6.404 MeV. The alpha + C-14 asymptotic normalization coefficients for these resonances were determined using the alpha-transfer reactions C-14(Li-7, t) and C-14(Li-6, d) at sub-Coulomb energies. The C-14(alpha,gamma) reaction rate at low temperatures has been evaluated. Implications of the new reaction rate on the evolution of accreting helium white dwarfs and on the nucleosynthesis of low mass stars during the asymptotic giant branch phase are discussed.

引用

页数：9

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