Investigation of the Operation Speed of Surface-Ionization Detectors

We report on the results of investigations based the thermodesorption spectroscopy and are aimed at analysis of the dependence of the operation speed of a surface-ionization detector on the emitter temperature T E . For this purpose, we have registered with the detector the evaporation spectra of he...

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Bibliographic Details
Published in:Technical physics 2022-02, Vol.67 (2), p.104-111
Main Authors: Radjabov, A. Sh, Iskhakova, S. S., Usmanov, D. T.
Format: Article
Language:English
Subjects:
Analysis
Classical and Continuum Physics
Detectors
Emitters
Investigations
Ionization
Ionization counters
Morphine
Physics
Physics and Astronomy
Spectra
Surface ionization
Citations: Items that this one cites
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Summary:We report on the results of investigations based the thermodesorption spectroscopy and are aimed at analysis of the dependence of the operation speed of a surface-ionization detector on the emitter temperature T E . For this purpose, we have registered with the detector the evaporation spectra of heroin, papaverine, and morphine, which were obtained at different rates of thermo-programmed heating of a substance. To obtain the dependence of the detector operation speed on remitter temperature T E , these spectra have been recorded at different values of T E . It is found that with increasing T E , the operation speed of the detector increases. It is found that this is associated with the increase in the rate of heterogenic processes in the absorption layer of the emitter upon an increase in T E . We have developed a mathematical model of this dependence, which is based on the surface ionization of molecules in nonstationary conditions.
ISSN:1063-7842
1090-6525
DOI:10.1134/S106378422201011X