Mass Spectrometric Studies of Reactions in Flames. I. Beam Formation and Mass Dependence in Sampling 1-Atm Gases

The pertinence of the Kantrowitz and Grey theory of aerodynamic molecular beams to the problem of sampling high-pressure systems with a mass spectrometer is discussed. A simple differentially pumped molecular beam system is described, which gives molecular beams of intensities of about 1017 molecule...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of chemical physics 1964-01, Vol.40 (6), p.1488-1495
Main Authors: Greene, Frank T., Brewer, Jerome, Milne, Thomas A.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The pertinence of the Kantrowitz and Grey theory of aerodynamic molecular beams to the problem of sampling high-pressure systems with a mass spectrometer is discussed. A simple differentially pumped molecular beam system is described, which gives molecular beams of intensities of about 1017 molecules/cm2/sec from 1-atm sources. The behavior of this sampling system with pure gases, mixtures, and reactive systems is presented. In beams from gaseous mixtures the mass spectrometer gives a response which depends on the first power of the component molecular weight: Ix+=kPxmx.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.1725351