×

RADIO FREQUENCY (RF) ION GUIDE FOR IMPROVED PERFORMANCE IN MASS SPECTROMETERS

  • US 20130175440A1
  • Filed: 01/06/2012
  • Published: 07/11/2013
  • Est. Priority Date: 01/06/2012
  • Status: Active Grant
First Claim
Patent Images

1. An ion guide, comprising:

  • a plurality of first electrodes disposed about an axis;

    a first opening at a first end of the plurality of first electrodes;

    a second opening at a second end of the plurality of first electrodes;

    a substrate comprising a plurality of second electrodes disposed thereover, the substrate being disposed substantially orthogonally to the second opening and comprising a third opening that is substantially aligned with the second opening; and

    means for applying a radio frequency (RF) voltage between adjacent pairs of the first electrodes, and between adjacent pairs of the second electrodes, wherein the RF voltage creates an ion confining electrodynamic field in a region between the rods and between the electrodes; and

    means for applying a direct current (DC) voltage drop between the first opening and the second opening.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×