THRESHOLD IONISATION BY ELECTRON IMPACT
نویسندگان
چکیده
منابع مشابه
Ionization of Helium Near Threshold by Electron Impact
The threshold law for the cross section for ionization of simple monatomic gases by electron impact has recently been the subject of renewed interest 2. To date, studies of He+, using the retarding potential difference (RPD) technique 3 6 have been taken as support for, or interpreted with the aid of, a linear threshold law 7 , 8 . Recent studies with a 127° electrostatic energy selector have, ...
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1964 B E C K E Y reported about a combined field ionisation/electron impact source1 the commercial version of which is shown in Fig. 1 2. Vhe vapour to be analyzed enters the source via an inlet line. However such inlet is suitable only for sampes of not too low volatility. For the qualitative analysis of organic compounds of very low volatility evaporation out of an oven (direct inet) in the i...
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ژورنال
عنوان ژورنال: Le Journal de Physique Colloques
سال: 1989
ISSN: 0449-1947
DOI: 10.1051/jphyscol:1989147