A newly developed prototype magnetic sector mass spectrometer with high resolving power
A newly developed prototype magnetic sector mass spectrometer with high resolving power
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DOI：
10.1088/1748-0221/14/01/p01025
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发表时间：
2019-01
影响因子：
1.3
通讯作者：
F. Yan;D. Meng;C. Yongjun;S. Wenjun;L. Xiaoxu;L. Yali;G. Meiru;Y. Zhengnan;Z. Lan;
中科院分区：
文献类型：
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作者：
F. Yan;D. Meng;C. Yongjun;S. Wenjun;L. Xiaoxu;L. Yali;G. Meiru;Y. Zhengnan;Z. Lan;
近年来，高分辨率质谱仪已被应用并可调谐到各个领域。在这项研究中，一个原型的磁扇形质谱仪具有高分辨率的能力已经开发。它的设计是基于采用一个90纳米的双轨道扇形磁场分析器，一个微型尼尔型离子源和两个通道式电子倍增器的离子检测。离子加速电压在200 ~ 2500 V范围内可控，质量范围为（1-73）amu。仪器对低质量通道氦和高质量通道氮的分辨力分别约为0.008amu和0.05amu（半峰全宽），在（1-40）amu的整个质量范围内，m/Δ m = 550。目前的灵敏度约为8.4 × 10−5 A/Pa。
In recent years, high-resolution mass spectrometers have been applied and made tunable to various fields. In this study, a prototype magnetic sector mass spectrometer with high resolving power has been developed. Its design is based on employing a 90̂ magnetic sector-field analyzer with double trajectory, a miniature Nier-type ion source and two channel-type electron multipliers for ion detection. The ion accelerating voltage is controllable from 200 to 2500 V and the mass range demonstrated herein is (1–73) amu. The resolution of the instrument for the lower mass channel helium and higher mass channel nitrogen is about 0.008 amu and 0.05 amu (full width at half maximum), respectively, or m/Δ m ≈550 in the whole mass range of (1–40) amu. The present sensitivity is measured to be approximately 8.4 × 10−5 A/Pa.