TIME-OF-FLIGHT QUADRUPOLE MASS-SPECTROMETRE ANALYSER (MASS FILTER, MONOPOLE AND TRIPOLE TYPE)

摘要

FIELD: physics.;SUBSTANCE: time-of-flight quadrupole mass-spectrometre analyser (mass filter, monopole, tripole type) relates to mass-spectrometry and can e used in designing high-resolution and high-sensitivity time-of-flight quadrupole mass-spectrometres. The analyser has a device for sorting ions according to specific charge, a device for inputting the analysed ions into the sorting device and a device for outputting the sorted ions from the sorting device. The input and output devices are in form of double-electrode quadrupole cells which, along with a quadrupolar field, can generate a longitudinal (along axis z) uniform electric field, the electrodes of which are electrically insulated from each other, where the working surfaces of the electrodes of the quadrupole cells are defined within the operating volume of the cell by certain ratios.;EFFECT: increased sensitivity and resolution of the analyser.;5 cl, 4 dwg