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

M. OZIMA; M. GOTO; Y. OGATA; T. SUZUKI

doi:10.5702/massspec1953.14.177

M. OZIMA, M. GOTO, Y. OGATA, T. SUZUKI

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1966 Volume 14 Issue 4 Pages 177-182

DOI https://doi.org/10.5702/massspec1953.14.177

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Published: October 01, 1966 Received: June 06, 1966 Available on J-STAGE: June 28, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: June 28, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : 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^-14 ampere during a static operation. The minimum amount of argon which can be detected by the present apparatus is about 5×10^-9cc STP. By means of isotope dilution method, the mass spectrometer can be used for the determination of radiogenic argon of as small as 10^-6 cc STP with the precision of±5% or less and is suitable for the K-A radiometric dating of very young rocks.
Right : 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^-14 ampere during a static operation.
The minimum amount of argon which can be detected by the present apparatus is about 5×10^-9cc STP. By means of isotope dilution method, the mass spectrometer can be used for the determination of radiogenic argon of as small as 10^-6 cc STP with the precision of ±5% or less and is suitable for the K-A radiometric dating of very young rocks.

Date of correction: June 28, 2010 Reason for correction: - Correction: CITATION Details: Wrong : E

Right : J. H. Reynolds, Rev. Sci. Instr., 27, 928(1956).

Abstract

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^-14 ampere during a static operation.
The minimum amount of argon which can be detected by the present apparatus is about 5×10^-9cc STP. By means of isotope dilution method, the mass spectrometer can be used for the determination of radiogenic argon of as small as 10^-6 cc STP with the precision of ±5% or less and is suitable for the K-A radiometric dating of very young rocks.

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