Positive Ion Counting for Mass Spectrometer Beam Currents of 10−14 to 10−19 Ampere
Abstract:A reliable method for detecting and recording very small ion beam currents is described. A twenty-stage electron multiplier is used in conjunction with scalers and other circuitry for counting individual positive ions. Advantages and limitations of this method, as applied to mass spectrometer problems, are discussed.
Document Type: Research Article
Affiliations: Knolls Atomic Power Laboratory, General Electric Company, Schenectady, New York
Publication date: February 1, 1954
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