Mass Spectrum of Residual Gases in High Vacuum Observed with a High Resolving Power Mass Spectrometer

Jun Okano

doi:10.5702/massspec1953.9.87

Jun Okano

Author information

JOURNAL FREE ACCESS

1961 Volume 9 Issue 18 Pages 87-95

DOI https://doi.org/10.5702/massspec1953.9.87

Details

Published: October 31, 1961 Received: August 14, 1961 Available on J-STAGE: June 28, 2010 Accepted: - Advance online publication: - Revised: -
Correction information
Date of correction: June 28, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : Resolving power of the mass spectrometer (constructed for micro-analysis in Osaka University) was increased up to about700 and the mass spectra of residual gases at the pressure of2. 5× 10^-8 mmHg were observed in the mass range from12to46. Numbers of doublets or multiplets were found in the mass spectra and each peak was assigned to an appropriate ionic specy considering its mass and peak height. It was found that oxygenated hydrocarbons and chlorine or hydrochloric acid were existent. The peak shapes of CH₄⁺, C⁺ and H⁺ were somewhat different from others, which may due to the excess of the initial energies. Owing to the increased resolving power, it became possible to separate rare gas peaks from hydrocarbon peaks under dynamic or static operation, which was useful for the micro-analysis of rare gases.
Right : Resolving power of the mass spectrometer (constructed for micro-analysis in Osaka University) was increased up to about700 and the mass spectra of residual gases at the pressure of 2. 5× 10^-8 mmHg were observed in the mass range from 12 to 46. Numbers of doublets or multiplets were found in the mass spectra and each peak was assigned to an appropriate ionic specy considering its mass and peak height.
It was found that oxygenated hydrocarbons and chlorine or hydrochloric acid were existent. The peak shapes of CH₄⁺, C⁺ and H⁺ were somewhat different from others, which may due to the excess of the initial energies. Owing to the increased resolving power, it became possible to separate rare gas peaks from hydrocarbon peaks under dynamic or static operation, which was useful for the micro-analysis of rare gases.

Date of correction: June 28, 2010 Reason for correction: - Correction: AFFILIATION Details: Wrong :
1) Department of Physics, Faculty of Science, Osaka University (Nakanoshima, Kata-ku,Osaka).

Right :
1) Department of Physics, Faculty of Science, Osaka University

Date of correction: June 28, 2010 Reason for correction: - Correction: CITATION Details: Right : J.H.Reynolds,Rev.Sci.Instr.,27,928(1956).

Date of correction: June 28, 2010 Reason for correction: - Correction: PDF FILE Details: -

Abstract

Resolving power of the mass spectrometer (constructed for micro-analysis in Osaka University) was increased up to about700 and the mass spectra of residual gases at the pressure of 2. 5× 10^-8 mmHg were observed in the mass range from 12 to 46. Numbers of doublets or multiplets were found in the mass spectra and each peak was assigned to an appropriate ionic specy considering its mass and peak height.
It was found that oxygenated hydrocarbons and chlorine or hydrochloric acid were existent. The peak shapes of CH₄⁺, C⁺ and H⁺ were somewhat different from others, which may due to the excess of the initial energies. Owing to the increased resolving power, it became possible to separate rare gas peaks from hydrocarbon peaks under dynamic or static operation, which was useful for the micro-analysis of rare gases.

Corresponding author

Correction information

Register with J-STAGE for free!