Accession Number : ADA207585

Title :   Electron-Impact Ionization Time-of-Flight Mass Spectrometer for Molecular Beams,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA AEROPHYSICS LAB

Personal Author(s) : Pollard, James E ; Cohen, Ronald B

PDF Url : ADA207585

Report Date : 15 Apr 1989

Pagination or Media Count : 26

Abstract : A method is described for performing electron impact ionization time of flight mass spectrometry in a molecular beam apparatus. The method is a convenient way to optimize the performance of pulsed or continuous nozzle sources and can be used in conjunction with laser excitation. Mass spectra are produced either as analog waveforms or in a high repetition rate ion counting mode. The device can also be operated as a fast ionization guage for time resolved detection of pulsed beams. Electron impact ionization, Molecular beams, Time of flight, Mass spectrometer. (mjm)

Descriptors :   *ELECTRON IMPACT SPECTRA, *MASS SPECTROMETERS, *MASS SPECTROMETRY, *MOLECULAR BEAMS, ANALOG SYSTEMS, DETECTION, EXCITATION, FLIGHT, GAGES, IONIZATION, LASERS, MASS SPECTRA, NOZZLES, PULSED LASERS, SOURCES, TIME, WAVEFORMS

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE