RF power supply for a mass spectrometer

Details RF power supply for a mass spectrometer RF power supply for a mass spectrometer

2009-01-21

2011-10-04

Wells, Nikita (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

C250S281000, C250S290000, C250S293000, C363S017000, C363S171000

Reexamination Certificate

active

08030613

ABSTRACT:
The present invention provides a radio frequency (RF) power supply in a mass spectrometer. The power supply provides an RF signal to electrodes of a storage device to create a trapping field. The RF field is usually collapsed prior to ion ejection. In an illustrative embodiment the RF power supply includes a RF signal supply; a coil arranged to receive the signal provided by the RF signal supply and to provide an output RF signal for supply to electrodes of an ion storage device; and a shunt including a switch operative to switch between a first open position and a second closed position in which the shunt shorts the coil output.

REFERENCES:
patent: 5742490 (1998-04-01), Bhagwat et al.
patent: 6844547 (2005-01-01), Syka
patent: 7498571 (2009-03-01), Makarov et al.

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