Mass Spectrometer Systems for Isotope Geochemistry(1). High Sensitivity Mass Spectrometry of Rare Gases by a System with a Getter Ion Pump

スポンサーリンク

概要

• 論文の詳細を見る

• A 20 cm, 90° direction focussing mass spectrometer was constructed for laboratory use in isotope geochemistry. The mass spectrometer is of conventional design but has a greater flexibility for future modifications. For obtaining high vacuum of better quality and for its easy maintenance, a 40 l/s getter ion pump was employed in the main pumping system together with a chemisorption pump. Without using an oil diffusion pump, vacuum of better than 10<SUP>-8</SUP>mm Hg was easily obtained, although argon background was always high as expected. The absolute amount of the residual argon in the analyzer tube was found to range from 1 to 10 × 10<SUP>-7</SUP>ml STP.<BR> The mass spectrometer was used for the high sensitivity mass spectrometry of rare gases using a six-stage secondary electron multiplier. It was demonstrated that the system has a enough sensitivity to measure 10<SUP>-9</SUP>ml STP xenon. The residual gases in the analyzer up to xenon mass regions were also analyzed.

• 日本質量分析学会の論文

著者

• Sakai Hitoshi

  Institute for Thermal Spring Research, Okayama University

• Sakai Hitoshi

  Institute For Thermal Spring Research Okayama University

• NAKATANI TADAO

  Tamagawa Work, Nippon Electric Co., Kawasaki

• UMEMOTO SHUNJI

  Institute for Thermal Spring Research, Okayama University

• KURODA HIDEO

  Tamagawa Work, Nippon Electric Co., Kawasaki

関連論文

• Geochemical Aspects of the McMurdo Saline Lakes with Special Emphasis on the Distribution of Nutrient Matters
• Mass Spectrometer Systems for Isotope Geochemistry(1). High Sensitivity Mass Spectrometry of Rare Gases by a System with a Getter Ion Pump
• Calculation of the Reduced Partition Function Ratios of α-, β-Quartzs and Calcite

スポンサーリンク