Molecular-beam chopper phase controller and timing interface is subsystem of four-stage, differentially pumped, modulated molecular-beam/mass spectrometer. Subsystem maintains accurate phase control and timing for repetitive signal averaging over several hours of operation. Chopper phase controller/ timing interface and four-channel programable time-multiplexed amplifier provide substantial improvements in attainable signal-to-noise ratio, detection limit, and accuracy of molecular-beam/mass-spectrometer system.
Molecular-Beam Chopper and Four-Channel Amplifier
NASA Tech Briefs ; 9 , 3
1986-01-01
Miscellaneous
No indication
English
Series Motor Four Quadrants Drive DC Chopper
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