用γ射线大角度康普顿散射研究电子动量分布

STUDY OF ELECTRON MOMENTUM DISTRIBUTIONBY γ-RAY COMPTON SCATTERING ATLARGE SCATTERING ANGLE

本文介绍我们最近建立的用γ散射方法获取康普顿轮廓(Compton profile)数据的实验装置及初步测量的结果.采用的放射源为^(241)Am(210mCi),散射角为165°测量了国际标准校核样品:水.测量结果与国外发表的结果在±1%之内相符合,达到国际相互校核的水平.还测量了Al(三种不同厚度)、LiF和Cu样品.对测量结果进行了分析和讨论.

A set-up for measuring the Compton profile has been established. The Compton profiles of H2O (international standard sample for comparison), Al (three different thicknesses), LiF and Cu have been measured, using 59.54 KeV γ-rays from a 210 mCi 241Am source at 165° fixed scattering angle. Analyses and discussions are given.Our results for water are in agreement with published measurements of some foreign groups within an allowance of±1%. It is suggested that the method and results are reliable.