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20—46MeV/u ¹²C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 ¹²C IONS Ⅰ. YIELDS AND DISTRIBUTIONS OF THE TARGET RESIDUES

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【Author】 SUN TONGYU LI WENXIN WU DINGQING ZHAO LILI SUN RULIN YIN XINMIN(Institute of Modern Physics, Academia Sinica,Lanzhou,730000)LI ZE JING KEXING LI XINHUA (China Institute of Atomic Energy,P. O. Box 275,Beijing, 102413)

【机构】中国科学院近代物理研究所；中国原子能科学研究院；中国原子能科学研究院兰州； 730000；兰州；北京； 102413； 102413；

【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¹²C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¹²C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。更多还原

【Abstract】 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.更多还原