Gated charged-particle trap

摘要: The design and operation of a new type charged-particle trap provides simultaneous measurements mass, charge, velocity large electrospray ions. consists detector tube mounted between two sets center-bored trapping plates. Voltages applied to the plates define symmetrically-opposing potential valleys which guide axially-injected ions cycle back forth through charge-detection tube. A low noise charge-sensitive amplifier, connected tube, reproduces image charge individual as they pass Ion mass is calculated from measurement ion following each passage detector.