47MeV/u^(12)C同^(133)Cs反应碘同位素产额的测定  

Measurment of the Iodine Isotopic Yields from the Interaction of 47 MeV/u ^(12)C with ^(133)Cs

作　　者：杨维凡[1] 赵之正[1] 李宗伟[1] 孙秀荣[1] 谢秀君[1] 牟万统[1] 秦芝[1] 张立[1] 杨永峰[1] 孙儒林 

机构地区：[1]中国科学院近代物理研究所,兰州730000

出　　处：《高能物理与核物理》1993年第10期873-877,共5页High Energy Physics and Nuclear Physics

摘　　要：用放化法测量了47MeV/u ^(12)C同^(133)Cs相互作用时碘同位素的产额。发现碘同位素产额分布曲线的峰位在^(124)Ⅰ附近,半宽度为6.5质量单位,最可几产物的质量损失为9.2个质量单位。靶核削裂2个质子的产物^(131)Ⅰ的形成截面约0.47—0.87mb,没观察到靶核削裂2个质子,再俘获1个中子的产物^(132)Ⅰ的活性。The formation cross sections of iodine isotopes from the intereaction of 47 MeV/u ^(12)C with ^(133)Cs have been measured radio-chemically. The isotopic yield distribution curve has been costructed. It is found that the peak of the curve is in the vicinity of ^(124)I and the curve has a FWHM of 6.5 mass units. The mass loss of the most probable product is 9.2 mass units. The cross section of ^(131)I which is produced by striping of two protons from the target nuclei is 0.47—0.87 mb. The activities of ^(132)I was not observed.

关 键 词：重离子反应 核反应产额 碘同位素 

分 类 号：O571.4[理学—粒子物理与原子核物理]