Possible systematic error in molecular beam time-of-flight analysis with a quadrupole mass spectrometer

H. R. Siddiqui, Arshad Khan, P. E. Siska

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Substantial error in estimating widths of supersonic molecular beam speed distributions can result when using a conventional quadrupole mass spectrometer in pulse-counting mode as a molecular beam detector. This results mainly from improper discriminator settings reached in attempting to maximize signal to background. The effect is illustrated with measurements on a nominally Mach-10 helium supersonic beam.

Original languageEnglish (US)
Pages (from-to)1940-1941
Number of pages2
JournalReview of Scientific Instruments
Volume53
Issue number12
DOIs
StatePublished - Dec 1 1982

All Science Journal Classification (ASJC) codes

  • Instrumentation

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