A New Isotope Mass Spectrometer with a Thermal Ionization Cavity Ion Source and Magnetic-Electronic Double-focus Analyzer for Trace Analysis

被引：2

作者：

Zhai Li-Hua ^{[1
]}

Wei Guan-Yi ^{[1
]}

Deng Hu ^{[1
]}

Li Zhi-Ming ^{[1
]}

Zhou Guo-Qing ^{[1
]}

Li Xue-Song ^{[1
]}

Su Yong-Yang ^{[1
]}

Wang Chang-Hai ^{[1
]}

Zhang Zi-Bin ^{[1
]}

机构：

[1] NW Inst Nucl Technol, Xian 710024, Peoples R China

来源：

CHINESE JOURNAL OF ANALYTICAL CHEMISTRY | 2011年 / 39卷 / 10期

关键词：

Thermal ionization cavity; Ion source; Mass spectrometer; Isotope ratio; SAMPLES;

D O I：

10.3724/SP.J.1096.2011.01543

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A tube type thermal ionization cavity (TIC) ion source was developed and introduced into a self-made magnetic-electronic double focus mass spectrometer. High efficiency and low background was obtained by using ohmic heat and relatively independent control of sample evaporation and ionization. The evaluation measurements for trace analysis showed that the. system detect efficiency for U and Pu was 1% and 6% in average, the relative standard deviation of R-235/238 for 50 pg natural uranium and R-240/239 for 0. 1 pg plutonium (about 10 fg Pu-240 contained) was less than 1% in the peak jump mode with one channel ion counting detector.

引用

页码：1543 / 1548

页数：6

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