Theoretical and experimental studies of molecular (atomic) exchange at the installation for measuring and analyzing the residual gas medium UID-2

The paper presents the results of studies of mass transfer in the measuring circuit of the UID-2 installation (installation of pressure measurement and analysis of the residual gas medium in the electro-vacuum devices), which consists of two parallel vacuum paths, in the volumes of which are placed...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-02, Vol.1799 (1), p.12004
Main Authors: Bushin, S A, Nesterov, S B
Format: Article
Language:English
Subjects:
Circuits
Diaphragms
Gas composition
Heat exchange
Mass transfer
Monte Carlo simulation
Physics
Pressure measurement
Qualitative analysis
Residual gas
Spectrometry
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Summary:The paper presents the results of studies of mass transfer in the measuring circuit of the UID-2 installation (installation of pressure measurement and analysis of the residual gas medium in the electro-vacuum devices), which consists of two parallel vacuum paths, in the volumes of which are placed a total pressure transducer and a monopolar mass spectrometric sensor, limited by pairs of inlet and outlet diaphragms. Using the Monte-Carlo method, estimates of the average density of the distribution of the number of molecules within specified intervals of the number of collisions of the latter with surfaces of characteristic dimensions of these volumes are obtained.The experimental results obtained within the accuracy of the experiment are consistent with the calculated data on the protective properties of diaphragms that prevent the negative influence of the heated cathode of the gauge transducer on the gas composition of the analytical sample during the quantitative and qualitative analysis of the residual gas medium in the electro-vacuum devices based on the implementation of the destructive method.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1799/1/012004