Abstract

Channel electron multiplier array (CEMA) amplification factors were determined for organic ions in the mass range of 31–614 amu, noble gas and Hg ions by direct comparison of the output signals of the CEMA (Mullard G 40 25 ) and a Faraday cage collector, both placed at the detector end of a mass spectrometer. Empirical formulae are discussed to represent the gain as a function of the mass, the structure, and the energy of the ion.

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