H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 49/04 (2006.01) B01D 59/44 (2006.01) H01J 49/36 (2006.01) H01J 49/42 (2006.01)
Patent
CA 2097210
A method for isolating an ion in a QIT (1) employing values from a mass axis calibration chart to establish the maximum DAC value to scan to in order to scan out m(p)-I and less during ramp up o~ 'RF trapping field while applying a specifically selected iced supplemental frequency applied during said calibration; and employing values from the calibration curve to establish the DAC value to scan out m(p)+1 and greater during ramping down of RF trapping field, while applying a previously determined fixed broadband spectrum to the QIT end caps,
R. William Wray & Associates
Varian Inc.
Varian Associates Inc.
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