【摘 要】
：
在唯象模型的基础上,考虑到碰撞氘核的D态分量对跃迁矩阵元的贡献和4He基态D态成分,我们从理论上计算了低能d(d,γ)α反应的天体物理学S因子.由理论计算再现d-d系统的结合能
【机 构】
：
中国原子能科学研究院,太原师范学院物理系
论文部分内容阅读
在唯象模型的基础上,考虑到碰撞氘核的D态分量对跃迁矩阵元的贡献和4He基态D态成分,我们从理论上计算了低能d(d,γ)α反应的天体物理学S因子.由理论计算再现d-d系统的结合能和以及由共振群方法计算的d-d弹性散射相移,得到Woods-Saxon势参数.并由此计算的S因子与实验数据在Ec.m.＜3MeV范围符合得较好,尤其在天体物理学感兴趣的几百keV以下能区,理论计算结果很好地符合实验数据.由理论计算结果外推,计算了目前还没有实验数据的使恒星核合成反应过程能够进行的恒星能区(约1-20keV)的S因子.
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