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High sensitivity pulse-counting mass spectrometer system for noble gas analysis (1980)

Hohenberg, C. M.

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Publication Date: 2019-06-27

Description: A pulse-counting mass spectrometer is described which is comprised of a new ion source of cylindrical geometry, with exceptional optical properties (the Baur source), a dual focal plane externally adjustable collector slits, and a 17-stage Allen-type electron multiplier, all housed in a metal 21 cm radius, 90 deg magnetic sector flight tube. Mass discrimination of the instrument is less than 1 per mil per mass unit; the optical transmission is more than 90%; the source sensitivity (Faraday collection) is 4 ma/torr at 250 micron emission; and the abundance sensitivity is 30,000.

Keywords: INSTRUMENTATION AND PHOTOGRAPHY

Type: Review of Scientific Instruments; 51; Aug. 198

Format: text

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