专用于加速器质谱计的小型回旋加速器中的若干关键问题  

Several key problems on the minicyclotron dedicated to AMS

作　　者：刘永好[1] 陈茂柏[1] 李德明[1] 卢相顺[1] 沈立功[1] 徐森林[1] 陈国生[1] 张岳祥[1] 

机构地区：[1]中国科学院上海原子核研究所,上海201800

出　　处：《核技术》1999年第9期557-562,共6页Nuclear Techniques

摘　　要：介绍了超灵敏小型回旋加速器质谱计发展过程中出现的电场渗透、真空条件对束流传输效率稳定性和同位素比测量精度的影响、空间电荷效应和X射线本底等特殊现象和问题，以及通过多年的观察和实验，寻找到的克服和解决这些问题的办法。Several special phenomena and problems occurred on SMCAMS during itsdevelopment, such as electric field penetration, the influence of vacuum condition onthe stability of transmission efficiency and the precision of isotopic ratiomeasurements, space charge effects and X ray backgrounds etc. were introduced inthis article. The solutions based on many observations and experiments have beenobtained within the last few years.

关 键 词：电场渗透 X本底 真空条件 加速度 质谱计 

分 类 号：TL817.4[核科学技术—核技术及应用] TH84[机械工程—仪器科学与技术]