High sensitivity pyrex tube mass spectrometer for very small amount of argon analysis

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概要

• 論文の詳細を見る

• The operation characteristics of a pyrex tube mass spectrometer which was particularly designed for the analysis of very small amount of argon for K-A radiometric dating method is described. The mass spectrometer has very low background: there are no observable background peaks in m/e=36 and 38 and the background in m/e=40 is less than 10<SUP>-14</SUP> ampere during a static operation.<BR> The minimum amount of argon which can be detected by the present apparatus is about 5×10<SUP>-9</SUP>cc STP. By means of isotope dilution method, the mass spectrometer can be used for the determination of radiogenic argon of as small as 10<SUP>-6</SUP> cc STP with the precision of ±5% or less and is suitable for the K-A radiometric dating of very young rocks.

• 日本質量分析学会の論文

著者

• Suzuki T.

  Central Research Laboratory, Hamamatsu Photonics K.K.

• OGATA Y.

  Central Research Laboratory, Mitsubishi Electric LTD

• Ozima M.

  Geophysical Institute, University of Tokyo

• GOTO M.

  Central Research Laboratory, Mitsubishi Electric LTD

関連論文

• Near Infrared Photomultiplier with Transfered Electron Photocathode
• High sensitivity pyrex tube mass spectrometer for very small amount of argon analysis

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