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Detector response in time-of-flight mass spectrometry at high pulse repetition frequenciesDead time effects in chevron configured dual microchannel plates (MCPs) are investigated. Response times are determined experimentally for one chevron-configured dual MCP-type detector and two discrete dynode-type electron multipliers with 16 and 23 resistively divided stages. All of these detectors are found to be suitable for time-of-flight mass spectrometry (TOF MS), yielding 3-6-ns (FWHM) response times triggered on a single ion pulse. It is concluded that, unless there are viable solutions to overcome dead time disadvantages for continuous dynode detectors, suitable discrete dynode detectors for TOF MS appear to have a significant advantage for high repetition rate operation.
Document ID
19930071432
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gulcicek, Erol E.
(NASA John F. Kennedy Space Center Cocoa Beach, FL, United States)
Boyle, James G.
(Analytica of Branford, Inc. CT, United States)
Date Acquired
August 16, 2013
Publication Date
August 1, 1993
Publication Information
Publication: Review of Scientific Instruments
Volume: 64
Issue: 8
ISSN: 0034-6748
Subject Category
Instrumentation And Photography
Accession Number
93A55429
Funding Number(s)
CONTRACT_GRANT: NAS10-11859
CONTRACT_GRANT: NIH-1-R43-MH-47631-02
Distribution Limits
Public
Copyright
Other

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