质子滴线核^(12)N在^(28)Si靶上的核反应总截面测量

MEASUREMENT OF TOTAL REACTION CROSS SECTION FOR EXOTIC LIGHT PROTON-RICH NUCLEUS ^(12)N

描述了 5 0 .4MeV/u的12 N和 42 .3MeV/u的13 N次级放射性束在2 8Si靶上引起的核反应总截面σr 实验研究 ,结果发现12 N的反应总截面σr 比其相邻同位素核13 N有着异常的增大 .这可能是核形变及核子对效应造成的 ,试验中的测量误差也不可忽视 .利用微观Glauber模型计算了12 N在2 8Si靶上的核反应总截面 ,并与实验结果做了比较 。

Measurements of the total reaction cross section for proton drip line nucleus 12 N at about 50.4 MeV/u on Si target were performed on RIBLL. Compared with its neighbor 13 N, large enhancement of total reaction cross section σ r for 12 N is observed. This might be caused by nuclear deformation and nucleon pair effect, and the experimental inaccuracy should not be neglected. The σ r of 12 N calculated by using a microscopic Glauber model is in agreement with the experimental results.