Ion counting detector

Note Ion counting detectors also give signals upon impact of energetic neutrals, electrons, or photons. Therefore, care has to be taken, not to allow other particles than the mass-analyzed ions to hit the detector. 

The electron output of ion-counting detectors is usually measured with reference to ground potential, i.e., the first dynode is set to negative high voltage as to achieve acceleration of the electrons down the dynode assembly. In case of sector... 

Dead time effects only occur for ion counting detectors, not for analog detectors. The detector dead time is the time after the impact of an ion for which the ion counting system is blind to further incoming ions. The detector dead time is a property of the whole ion counting system and arises from both the detector and the ion counting electronics. In ICP-MS detector dead time is corrected for by applying equation (4.12). ... 

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