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11C（d,n）12N反应角分布的测量和虚衰变12N→11C+p渐近归一化系数的确定
Measurement of Angular Distribution for 11C（d,n）12N Reaction and Determination of Asymptotic Normalization Coefficient for the Virtual Decay 12N→11C+p
【摘要】 利用HI 13串列加速器次级束流线产生的11C束测量了质心系能量为9.8 MeV的11C(d,n)12N反应的角分布。通过改变DWUCK4程序中径向积分的下限,验证了该反应的周边性。比较了实验结果与扭曲波玻恩近似(DWBA)计算,得出虚衰变12 N→11 C+ p的渐近归一化系数(ANC)平方为(2.86±0.91) fm-1。结果表明:直接俘获对11C(p,γ)12N反应有重要贡献。
【Abstract】 Angular distribution of the 11C（d,n）12N reaction at Ec.m.=9.8 MeV was measured in inverse kinematics with the secondary 11C beam. The peripherality of this reaction was also verified by changing the radial parameter limit in distorted wave Born approximation（DWBA） calculations. The experimental data were analyzed with DWBA calculations and thereby the square of asymptotic normalization coefficient（ANC） was extracted to be （2.86±0.91）fm-1 for the virtual decay 12N→11C + p. The present work shows that the direct capture contribution in the 11C（p,γ）12N reaction is of importance.
【Key words】 H)(11C,12N)n reaction in inverse kinematics； angular distribution； (distorted)-wave Born approximation； asymptotic normalization coefficient method；
- 【文献出处】 原子能科学技术 ,Atomic Energy Science and Technology , 编辑部邮箱 ,2005年02期
- 【分类号】O571.423
- 【下载频次】32