Diffraction features in secondary electr
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Article
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1980
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Elsevier Science
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English
β 159 KB
Classified abstracts [4436][4437][4438][4439][4440][4441][4442][4443][4444] detector is composed of a mass spectrometer installed in a detector chamber and a collimator set on the entrance of the detector chamber. The collimator has two apertures and a pumping surface between them. The performance o