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A molecular beam electron bombardment detector that detects approximately 1/40 of a neutral beam falling into an area of 3×10−2 cm2 is described. Molecular beams of sulfur dioxide and argon have been detected with signal-to-noise ratios of 2000/1 and 500/1, respectively. An improved design is discussed.
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Rainer Weiß (1961) studied this question.
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