20—46MeV/u ^(12)C离子和铜的相互作用中靶余核的研究——Ⅰ.靶余核的产额及其分布  

STUDY ON THE TARGET RESIDUES FROM THE INTERACTION OF COPPER WITH 20 - 46 MeV/u ^(12)C IONS Ⅰ. YIELDS AND DISTRIBUTIONS OF THE TARGET RESIDUES

作　　者：孙彤玉[1] 李文新[1] 吴定清[1] 赵莉莉[1] 孙儒林 尹新民[1] 李泽[2] 敬克兴[2] 李新华[2] 

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国原子能科学研究院,北京102413

出　　处：《核化学与放射化学》1993年第2期65-70,共6页Journal of Nuclear and Radiochemistry

基　　金：国家自然科学基金

摘　　要：用核化学技术测定了20.5、24.0、27.5、31.1、34.8、38.5、42.3和46.4MeV/u的^(12)C离子和铜相互作用中36个反应余核的激发函数。从这些数据得到了A=48和A=56质量链的电荷分布,其高斯电荷分布宽度随入射^(12)C离子能量增加而略有增加。根据电荷分布假设计算了反应余核的同位素分布和质量分布。The excitation functions have been determined for 36 reaction products from the interaction of copper with 20. 5,24. 0,27. 5,31. 1,34. 8,38. 5,42. 3 and 46. 4 MeV/u 12C ions using nuclear chemical techniques. From these data, charge distribution of mass numbers of A =48 and 56 have been obtained. It is found that the widths of the charge distributions increase slowly with increasing incident 12 C energies. On the basis of assumption of the charge distribution, the isotopic distributions and the mass yield distributions have been calculated.

关 键 词：激发函数 γ射线能谱法 铜 碳离子 

分 类 号：O571.4[理学—粒子物理与原子核物理]