摘要
以屏栅电离室为基础,同时引出其阳级和阴极信号,研制了1台能够同时记录两路信号的双参数谱仪,在DEC 3000工作站上编制程序,实现了双维谱数据的获取、显示和存储。利用所建立的谱仪,测量了α放射源的双维谱,计算了α粒子的角分布,并讨论了如何利用角分布来校正活度测量中自吸收和反散射的影响以及改善电离室阳极能谱的能量分辨率。
A dual parameter spectrometer is developed with which the anode and cathode signals of the gridded ionization chamber are recorded simultaneously, a computer program is designed to collect, display and store the two dimensional spectra. Alpha sources are measured with the spectrometer and the angle distribution of alpha particles are calculated. It is discussed how to correct the effects of back scattering and self absorption in the measurement of activity with the angle distribution and it is pointed out that the resolution of the energy spectra can be improved by using the angle distribution as well.
出处
《原子能科学技术》
EI
CAS
CSCD
2003年第1期82-85,共4页
Atomic Energy Science and Technology
关键词
屏栅电离室
双参参谱仪
Α粒子
角分布
α能谱
gridded ionization chamber
dual parameter spectrometer
angle distribution of alpha particle
alpha energy spectra
