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Um espectômetro de massas de tempo-de-vôo para o estudo da ionização de amostra...
Cardoso,Aldo S.; Pontes,Frederico C.; Souza,Gerardo Gerson B. de; Mundim,Maria Suely PedrosaA simple and inexpensive time-of-flight mass spectrometer, dedicated to the study of gas-phase ionization processes induced by high energy electrons (0.5 - 3.0 keV), is described. The spectrometer design is based on the Wiley-McLaren principle, with a total length of about 18 cm. As a demonstration of the performance of the apparatus, mass spectra for Ar, CH4, CO2, and SF6, obtained at 1 keV electron energy, ar...
Date: 2001
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Origin: Oasisbr