上海超灵敏小型回旋加速器质谱计分析^(26)Al的初步研究  

Progresses in analyzing ^(26)Al with SMCAMS

作　　者：王胜利[1] 刘永好[1] 李德明[1] 陈茂柏[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800

出　　处：《核技术》2007年第10期845-849,共5页Nuclear Techniques

摘　　要：为在专用于14C分析的上海超灵敏小型回旋加速器质谱计(SMCAMS)上尝试分析26Al,计算了加速轨道,确定了高频频率、加速圈数、倍频数等参数,还对注入系统做束流光学计算。做了分析26Al的初步实验,得到了频谱曲线,测量到1.15×10-9A的27Al-束流以及0.038CPS分析26Al的本底,并计算出SMCAMS分析26Al的丰度灵敏度。Shanghai Mini-Cyclotron based Accelerator Mass Spectrometer （SMCAMS） was especially designed for analyzing ^14C. In order to accelerate and analyze 26A1 the accelerated orbit and beam optics in injection system were calculated and harmonic number and acceleration turns was optimized. Preliminary experiment was carried out. In which a beam current of 1.15×10^-9A for ^27A1- and 0.038 CPS background for ^26A1 were measured. The limited sensitivity of ^26A1/^27A1 is 5.25×10^-12.

关 键 词：SMCAMS ^26A1 加速器质谱计 本底 

分 类 号：TL542[核科学技术—核技术及应用]