γ伴随飞行时间法对Am-Be中子源的局部中子能谱的测量

THE MEASUREMENT OF THE PARTIAL NEUTRON ENERGY SPECTRA OF Am-Be SOURCE BY γ RAY ASSOCIATED TOF TECHNIQUE

摘要: <正> 一、前言 Am-Be中子源能谱的研究,已有不少实验室采用不同的方法进行了测量。但迄今为止,在能谱的细致结构和小于2MeV的低能部分,仍存在着差异。甚至用同一方法所测量

Abstract: The partial neutron spectrum of Am--Be source for transitions to the 4.43MeV state of ~(12)C is measured by the associated γ ray TOF technique. The energyrange 1.3--6.4 MeV is obtained. Three peaks of neutron energies of 2.2±0.1,3.2±0.1 and 4.4±0.1 MeV are observed. Our results are also compared withthose of other authors.