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Quantitative analysis with an energy‐dispersive detector using a pulsed electron probe and active signal filtering
Author(s) -
Statham P. J.,
Long J. V. P.,
White G.,
Kandiah K.
Publication year - 1974
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300030407
Subject(s) - analyser , detector , transient (computer programming) , signal (programming language) , energy (signal processing) , cathode ray , beam (structure) , materials science , pulse (music) , displacement (psychology) , electron , optics , physics , optoelectronics , analytical chemistry (journal) , chemistry , computer science , nuclear physics , psychology , chromatography , quantum mechanics , psychotherapist , programming language , operating system
The pulsed beam technique has been used to achieved a high data acuumulation rate in an energy‐dispersive analytical system consisting of an electron probe analyser and the Harwell ‘Highspec’ pulse analyser system 3074. The use of fast beam switching ( ∼ 30 ns transient time) and the special timing facilities available in the Harwell equipment reduce the spectrum contamination due to displacement of the probe during switching to a low level and also provide precise measurements of live time, essential for accurate analysis. Analyses performed at spectrum accumulation rate of up to 12 kP.P.S. shows agreement with accepted values to within ± 1% for major constituents. Simple modification of the system permits accumulation rates up to 25 kP.P.S.