Investigation of Interaction Mechanisms of High Energy Electrons and Gamma Quantum with Aqueous Solution of Methyl Orange Dye

  • Vitaliy V. Tsyats’ko National Science Center “Kharkiv Institute of Physics and Technology", Kharkiv, Ukraine https://orcid.org/0000-0002-7347-0500
  • Sergey P. Gokov National Science Center “Kharkiv Institute of Physics and Technology”, Kharkiv, Ukraine https://orcid.org/0000-0002-3656-3804
  • Yuri G. Kazarinov National Science Center “Kharkiv Institute of Physics and Technology”; Kharkiv V.N. Karazin National University, Kharkiv, Ukraine https://orcid.org/0000-0001-5143-8545
  • Tetiana V. Malykhina National Science Center “Kharkiv Institute of Physics and Technology”; Kharkiv V.N. Karazin National University, Kharkiv, Ukraine https://orcid.org/0000-0003-0035-2367
Keywords: organic dye, electron, gamma quantum, dosimetry

Abstract

The level of development of modern nuclear technologies forms a request for the development of new branches of science. At the same time, chemical dosimetry methods are also being improved [1, 2]. The essence of such methods consists in the quantitative determination of the radiation-chemical damages to the molecules of a substance when it is exposed to ionizing radiation [3, 4]. Liquid and solid solutions of organic dyes have intense bands optical absorption and fluorescence in the visible region of the spectrum, which makes it possible to use them in dosimetry systems [5, 6]. The use of organic dyes makes it possible to determine the absorbed dose in the range from 10-6 to 104 M Rad [7, 8]. In this work, we studied the processes of interaction of gamma-ray and high-energy electron fluxes with an aqueous solution of the organic dye methyl orange (C14H14N3О3SNa) [9, 10]. The calculations and experiment were carried out on a resonant electron accelerator with energies up to 30 MeV. The electron beam energy was 15 MeV. A tungsten converter was used to generate gamma quanta. The thickness of the converter varied from 0 to 6 mm. We have developed a computer program in C++ to simulate the irradiation process. This program uses the Geant4 class library based on the Monte Carlo method and runs in multi-threaded mode. For calculations, the model “PhysicsList emstandard_opt3” was chosen as the most suitable one. The value of radiation damage per one incident electron and produced gamma-quantum is determined in the work. The simulation results are compared with experimental data. Based on the results obtained, conclusions were drawn about the main mechanisms leading to the decomposition of organic dye molecules, and methods for optimizing the experiment for further research were proposed.

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Published
2022-03-17
Cited
How to Cite
Tsyats’ko, V. V., Gokov, S. P., Kazarinov, Y. G., & Malykhina, T. V. (2022). Investigation of Interaction Mechanisms of High Energy Electrons and Gamma Quantum with Aqueous Solution of Methyl Orange Dye. East European Journal of Physics, (1), 105-109. https://doi.org/10.26565/2312-4334-2022-1-14