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核聚变与等离子体物理 ›› 2012, Vol. 32 ›› Issue (2): 177-182.

• 核聚变工程技术 • 上一篇    下一篇

四极质谱计的氦氘分辨性能实验

黄向玫,曹 曾,蔡 潇,许正华   

  1. (核工业西南物理研究院,成都 610041)
  • 收稿日期:2011-01-19 修回日期:2011-12-10 出版日期:2012-06-15 发布日期:2011-06-14
  • 作者简介:黄向玫(1986-),女,广西省崇左市人,硕士研究生,主要从事核真空技术与表面物理研究。
  • 基金资助:

    国家磁约束核聚变能研究专项资助(2010GB1008002)

Experiments of helium and deuterium resolution performance using a quadrupole mass spectrometer

HUANG Xiang-mei, CAO Zeng, CAI Xiao, XU Zheng-hua   

  1. (Southwestern Institute of Physics, Chengdu 610041)
  • Received:2011-01-19 Revised:2011-12-10 Online:2012-06-15 Published:2011-06-14

摘要:

利用一套四极质谱气体分析与测试系统,开展MicroVision Plus四极质谱计的氦(He)、氘(D2)分辨性能实验。分别向分析室送入He和D2,记录质谱图,得到质量刻度和分辨率等信息。He+峰位为(4.0022±0.0006)amu;D2+峰位为(4.0246±0.0006)amu。在10-6~10-4Pa的分压范围,观察到He和D2的分辨率随其分压强的增大而减小。在10-7Pa•m3•s-1的He漏孔条件下,调节D2送气量,He+/D2+分压峰值比在10-1量级可以分辨出He。

关键词: 氘, 四极质谱计, 分辨性能

Abstract:

Base on the gas analysis and testing system of quadrupole mass spectrometer, experiments of resolution performance for helium and deuterium was carried out. The mass spectrograms were recorded when the vacuum vessel was filled with gas. The results show that the peak position for He+ is (4.0022±0.0006)amu and D2+ is (4.0246±0.0006)amu, respectively. Within the pressure range of 10-6~10-4Pa, it is found that the mass resolution of He (and D2) decreases with its partial pressure increase. Under a leak of 10-7Pa•m3•s-1 and adjusting the quantity of deuterium, the helium is discriminated if the peak ratio He+/D2+ is in the order of 10-1.

Key words: Deuterium, Quadrupole mass spectrometer;Resolution performance

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