【作者】 刘祖华； 阮明； 赵跃林； 张焕乔； 杨峰； 马中玉； 林承键； 陈宝秋； 吴岳伟； 詹文龙； 郭忠言； 肖国青； 徐瑚珊； 孙志宇； 李加兴； 陈志强；

【Author】 LIU Zu-hua, RUAN Ming, ZHAO Yao-lin, ZHANG Huan-qiao, YANG Feng, MA Zhong-yu, LIN Cheng-jian, CHEN Bao-qiu, WU Yue-wei (China Institute of Atomic Energy, Beijing 102413, China) ZHAN Wen-long, GUO Zhong-yan, XIAO Guo-qing, XU Hu-shan, SUN Zhi-yu, LI Jia-xing, CHEN Zhi-qiang (Institute of Modern Physics, Chinese Academy of Sciences , Lanzhou 730000, China)

【机构】 中国原子能科学研究院； 中国科学院近代物理研究所；

【摘要】 测量了27,28P和相应同中子异位素在28Si靶上的中能反应截面．测得N=12和13同中子异位素的反应截面在Z=15处突然增大．对Z≤14同中子异位素和28P的实验数据结果可以用改进的光学极限近似的Glauber理论很好地描述．28P的反应截面能够用扩大核芯以改进的Glauber理论来解释．但是,用改进光学极限和少体近似的Glaubet理论却低估了27P的实验数据．理论分析表明,扩大的核芯加质子晕可能是响应27P+28Si反应截面增强的机制．更多还原

【Abstract】 The reaction cross sections of 27,28P and the corresponding isotones on Si target were measured at intermediate energies. The measured reaction cross sections of the N=12 and 13 isotones show an abrupt increase at Z=15. The experimental results for the isotones with Z≤14 and 28P can be described well by the modified Glauber theory of the optical limit approach. The enhancement of the reaction cross section for 28P could be explained by the modified Glauber theory with an enlarged core. Theoretical analysis with the modified Glauber theory of the optical limit and few-body approaches shows that an enlarged core together with proton are probably the mechanism responsible for the enhancement of the cross sections for the reaction of 27P+28Si.更多还原