Patent ID: 9087682
Filing Date: 2015-07-21
Classification: H01J

Abstract:
1. A method for the operation of a reaction cell for charged particles, comprising: supplying an RF multipole rod system with at least eight pole rods with RF voltages so that a pseudo-quadrupole potential for the radial storage of charged particles having low charge-related mass m/z is produced in the interior, and a pseudo-octopole, or a pseudo-multipole potential of higher order, for the radial storage of charged particles with significantly higher charge-related mass m/z is superimposed on the pseudo-quadrupole potential, where the RF voltage for the pseudo-quadrupole potential is chosen to store electrons, and the RF voltage for the pseudo-octopole, or pseudo-multipole potential, is chosen to store ions with a charge-related mass m/z greater than or equal to about 50 daltons.