The Bare Astrophysical S(E) Factor of the 7Li(p, α)α Reaction
The Bare Astrophysical S(E) Factor of the 7Li(p, α)α Reaction
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7Li(p, α)α 反应的裸天体物理 S(E) 因子
DOI：
10.1086/323868
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
H. Wolter
中科院分区：
文献类型：
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作者：
M. Lattuada;R. Pizzone;S. Typel;P. Figuera;Đ. Miljanić;A. Musumarra;M. Pellegriti;C. Rolfs;C. Spitaleri;H. Wolter
天体物理学上重要的 7Li(p, α)α 反应已通过特洛伊木马方法在能量范围 E = 10-400 keV 内进行了研究。一种基于扭曲波玻恩近似方法的新理论描述允许提取有关裸天体物理 S 因子 Sb(E) 的信息，其中 Sb(0) = 55 ± 3 keV 谷仓。将结果与直接实验数据进行比较，得出与模型无关的电子屏蔽势能值 Ue = 330 ± 40 eV，远高于绝热极限 Uad = 175 eV。
The astrophysically important 7Li(p, α)α reaction has been studied via the Trojan horse method in the energy range E = 10-400 keV. A new theoretical description, based on the distorted-wave Born approximation approach, allows one to extract information on the bare astrophysical S-factor, Sb(E), with Sb(0) = 55 ± 3 keV barns. The results are compared with direct experimental data leading to a model-independent value of the electron screening potential energy, Ue = 330 ± 40 eV, much higher than the adiabatic limit Uad = 175 eV.