B. Landais et al., VARYING THE RADIO-FREQUENCY - A NEW SCANNING-MODE FOR QUADRUPOLE ANALYZERS, Rapid communications in mass spectrometry, 12(6), 1998, pp. 302-306
This paper describes a new scanning made for quadrupole mass spectrome
ters. In accordance with the theoretical equations of ion motion in a
quadrupolar field, an alternative method of scanning is possible varyi
ng only the RF applied to the rods of the quadrupole, keeping constant
the amplitude of the AC and DC potentials, First results are reported
for a RF scanning range of 0.4-1.1 MHz and an AC amplitude of approxi
mately 250 V. (C) 1998 John Whey & Sons, Ltd.