Measurements of fast-neutron capture cross sections for ^(159)Tb and ^(169)Tm  

作　　者：ChenJin－Xiang ShiZhao－Min 等 

机构地区：[1]InstituteofHeavyIonPhysics,PekingUniversity,Beijing100871 [2]InstituteofHeavyIonPhysics,PekingUniversity

出　　处：《Nuclear Science and Techniques》1998年第3期138-142,共5页核技术（英文）

摘　　要：１ＩｎｔｒｏｄｕｃｔｉｏｎＦａｓｔｎｅｕｔｒｏｎｃａｐｔｕｒｅｃｒｏｓｓｅｃｔｉｏｎｓａｒｅｉｍｐｏｒｔａｎｔｆｏｒｔｈｅｕｎｄｅｒｓｔａｎｄｉｎｇｏｆｎｕｃｌｅａｒｒｅａｃｔｉｏｎｍｅｃｈａｎｉｓｍｓａｎｄｆｏｒｖａｒｉｏｕｓａｐｐｌｉｃａｔｉ...The neutron capture cross sections for 159 Tb and 169 Tm relative to the 197 Au (n, γ) 198 Au reaction are measured at neutron energies of 0.57 , 1.10 and 1.60 MeV by using the activation method. The activities of the products are measured with a high resolution HPGe detector gamma ray spectrometer. The errors of the present work are 5～6% for Tb, 6～7% for Tm. The recommended data in energy region of 0.4～3.0 MeV are given as compared with other data published previously.

关 键 词：核反应 中子俘获 ^159Tb ^169Tm 截面 

分 类 号：O571.552[理学—粒子物理与原子核物理]