Abstract
Atomic-force microscopy methods were used to study specimens of cathodes of multiwire proportional chambers subjected to a long-term exposure to a β-source 90Sr in the course of laboratory longevity tests. The changes in the surface morphology of the copper foil at the detector cathode that have occurred as a result of action of an electron beam have been described. The quantitative estimate and analysis of the evolution of radiation defects depending on the irradiation dose are presented. The similarity of the radiation-induced defects in the laboratory prototypes and in the full-scale proportional chambers after their use for 10 years at the Large Hadron Collider is demonstrated.
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ACKNOWLEDGMENTS
The authors are grateful to their colleagues of the Scientific Research Institute of Experimental Physics (Sarov) for the help in carrying out the investigations. They have participated in a rigorous investigation of specimens by the scanning force microscopy methods. The authors are thankful to leading researcher K.N. Ermakov of the Petersburg Nuclear Physics Institute, NRC “Kurchatov Institute” and to Associate Professor V.M. Vakhtel of the Voronezh State University for careful reading and valuable recommendations concerning the content of this paper.
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Buzoverya, M.E., Gavrilov, G.E. & Maev, O.E. Investigation of Radiation Erosion in a Gas Discharge Detector by Atomic-Force Microscopy. Tech. Phys. 66, 356–366 (2021). https://doi.org/10.1134/S1063784221020067
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DOI: https://doi.org/10.1134/S1063784221020067