<p>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.</p>
申请公布号
EP1774564(B1)
申请公布日期
2013.01.02
申请号
EP20050753097
申请日期
2005.06.21
申请人
THERMO FINNIGAN LLC
发明人
MAKAROV, ALEXANDER, ALEKSEEVICH;DENISOV, EDUARD, V.;KHOLOMEEV, ALEXANDER