对14.9MeV中子核反应产生的反冲核能谱的测量(英文)  

Measurement of Energy Spectra of Recoil Nuclides Induced by 14.9 MeV Neutrons

作　　者：叶邦角[1] 范扬眉[1] 春日井好己 池田裕二郎 杜江峰[1] 周先意[1] 翁惠民[1] 韩荣典[1] 

机构地区：[1]中国科学技术大学近代物理系 [2]日本原子能研究院中子科学中心

出　　处：《中国科学技术大学学报》1999年第4期452-457,共6页JUSTC

基　　金：中国科学院和中国科学技术大学回国留学人员基金

摘　　要：测量了由１４ ．９ Ｍｅ Ｖ 中子入射金属产生的反冲核的能谱．用活化技术测量溅射产额随靶与收集器之间距离的变化，用统一的原子阻止本领公式来计算溅射粒子在空气中的能量损失．溅射粒子的能量分布可由不同距离的溅射产额和能量损失导出．用这种方法第一次测量了 Ｍｇ 、 Ａｌ 、 Ｃｒ 、 Ｆｅ 、 Ｃｏ 、 Ｎｂ 和３１６ 型不锈钢等７ 种样品的８The energy spectra of radioactive recoil nuclides sputtered from metallic target induced by 14.9 MeV neutrons are measured. The activation measurement technique is used to measure the change of sputtered activities with the distances between targets and collectors. The energy loss of the sputtered particles in the air is calculated by a formula of universal nuclear stopping power. The energy distributions are deduced from the sputtered activities and the energy loss in the different distances. In this method the energy spectra of recoil nuclides for thick target from seven samples of Mg, Al, Cr, Fe, Co, Nb and type 316 stainless steel with 8 reactions have been presented in the first time.

关 键 词：能谱 反冲核 活化技术 中子 核反应 测量 

分 类 号：O571.421[理学—粒子物理与原子核物理] O571.523[理学—物理]