Abstract
The mechanism of occurrence of spontaneous self-sustained currents in a multiwire proportional chamber from the experiment at the Large Hadron Collider has been considered. Atomic force microscopy, Rutherford backscattering, and Raman spectroscopy on the copper foil of the chamber cathode revealed the formation of nanocarbon structures and their fluorinated compounds, which are well known as low-threshold sources of field emission of electrons.
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ACKNOWLEDGMENTS
We are grateful to the researchers of the National Scientific Research Institute of Experimental Physics (Sarov, Russia). They were deeply engaged in all stages of sample investigation. We gratefully acknowledge Dr. Konstantin N. Ermakov, leading researcher at the Petersburg Nuclear Physics Institute, for discussions of our paper.
Funding
This research was supported by the RF Ministry of Science and Higher Education within an agreement no. 075-10-2021-115 of October 13, 2021 (internal no. 15.SIN.21.0021).
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Arkhipov, A.A., Buzoverya, M.E., Karpov, I.A. et al. Nanostructured Emission Current Sources in Multiwire Proportional Chambers. Bull. Russ. Acad. Sci. Phys. 87, 1737–1745 (2023). https://doi.org/10.3103/S1062873823703999
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DOI: https://doi.org/10.3103/S1062873823703999