Species enrichment due to Mach‐number focusing in a molecular‐beam mass‐spectrometer sampling system

1976 ◽  
Vol 64 (11) ◽  
pp. 4345-4351 ◽  
Author(s):  
P. K. Sharma ◽  
E. L. Knuth ◽  
W. S. Young
Keyword(s):  
Mach Number ◽  
Mass Spectrometer ◽  
Molecular Beam ◽  
Sampling System ◽  
Mass Spectrometer Sampling

One-way Leak in Mass Spectrometer Sampling System

1987 ◽  
Vol 67 (4) ◽  
pp. 606-606 ◽  
Author(s):  
Robert F. Koebert ◽  
Richard Munster
Keyword(s):  
Mass Spectrometer ◽  
Sampling System ◽  
Mass Spectrometer Sampling

scholarly journals Molecular beam mass spectrometer sampling of flash ignited combustion

1985 ◽  
Vol 20 (1) ◽  
pp. 1205-1212 ◽  
Author(s):  
D. Lucas ◽  
R. Peterson ◽  
N.J. Brown ◽  
A.K. Oppenheim
Keyword(s):  
Mass Spectrometer ◽  
Molecular Beam ◽  
Mass Spectrometer Sampling

Gas Phase Interactions between Triethylindium and Trimethylgallium

1988 ◽  
Vol 131 ◽  
Author(s):  
P. D. Agnello ◽  
S. K. Ghandhi
Keyword(s):  
Gas Phase ◽  
Mass Spectrometer ◽  
Vapor Phase ◽  
Room Temperature ◽  
Low Pressure ◽  
Addition Compound ◽  
Sampling System ◽  
Mass Spectrometer Sampling

ABSTRACTA study of the room temperature gas-phase interactions between gallium and indium alkyls was undertaken using a mass spectrometer sampling system, mounted on a low pressure organometallic vapor phase epitaxial reactor. Mixtures of triethylindium with triethylgallium or trimethylgallium were investigated. Both combinations formed addition compounds; moreover, the triethylindium-trimethylgallium mixture underwent alkyl exchange. Both admixtures showed reduced reactivity towards arsine. A structure for the addition compound is proposed.

Mass Spectrometric Observation of Polymers of Carbon Dioxide in a Molecular Beam System

1965 ◽  
Vol 19 (1) ◽  
pp. 18-21 ◽  
Author(s):  
J. Cuthbert ◽  
E. R. Preece ◽  
A. H. Turnbull
Keyword(s):  
Carbon Dioxide ◽  
Mass Spectrometer ◽  
Molecular Beam ◽  
Mass Spectrometric ◽  
Sampling System ◽  
Gas Sampling ◽  
Isentropic Expansion ◽  
Sampling Process ◽  
Beam System

The operation of a mass spectrometer equipped with a molecular beam gas sampling system is described. Polymeric ions, (CO2)n+ where n varies from two to twelve, are observed when sampling CO2 at 1 to 6.5 atm; similar polymers are found in SO2 and N2O. A possible explanation is advanced in terms of isentropic expansion in the sampling process and subsequent condensation.

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