techusguИзвестия Юго-Западного государственного университета. Серия: Техника и технологииProceedings of the Southwest State University. Series: Engineering and Technology2223-1528Юго-Западный государственный университет10.21869/9/2223-1528-2026-16-2-118-131techusgu-426Research ArticleФИЗИКАPHYSICSОслабление гамма-излучения композиционными материалами с наночастицами Bi2O3Attenuation of gamma radiation by composite materials with nanoparticles Bi2O3https://orcid.org/0000-0001-7089-0692КузьменкоА. П.KuzmenkoA. P.

Кузьменко Александр Павлович, доктор физико-математических наук, профессор, главный научный сотрудник Регионального центра нанотехнологий

ул. 50 лет Октября, д. 94, г. Курск 305040

Aleksander P. Kuzmenko, Dr. Sci. (Physics and Mathematics), Professor, Chief Researcher of the Regional Center of Nanotechnology

50 Let Oktyabrya Str. 94, Kursk 305040

apk3527@mail.ruhttps://orcid.org/0000-0002-1893-1941РодионовВ. В.RodionovV. V.

Родионов Владимир Викторович, кандидат физико-математических наук, старший научный сотрудник Регионального центра нанотехнологий

ул. 50 лет Октября, д. 94, г. Курск 305040

Vladimir V. Rodionov, Cand. Sci. (Physics and Mathematics), Senior Researcher of the Regional Center of Nanotechnology

50 Let Oktyabrya Str. 94, Kursk 305040

vovarodionov2009@yandex.ruhttps://orcid.org/0000-0002-5004-0823ПугачевскийМ. А.PugachevskyM. A.

Пугачевский Максим Александрович, доктор физико-математических наук, ведущий научный сотрудник лаборатории нанооптики и плазмоники Центра фотоники и двумерных материалов

ул. Керченская, д.1 А/1, г. Москва 117303

Maksim A. Pugachevskii, Dr. Sci. (Physics and Mathematics), Leading Research of the Laboratory of Nano-Optics and Plasmonics of Center for Photonics and Two-Dimensional Materials

1 А/1 Kerchenskaya Str., Moscow, 117303

pmaximal@mail.ruhttps://orcid.org/0000-0002-7941-8404КочураА. В.KochuraA. V.

Кочура Алексей Вячеславович, кандидат физико-математических наук, доцент, заместитель директора Регионального центра нанотехнологий

ул. 50 лет Октября, д. 94, г. Курск 305040

Aleksey V. Kochura, Cand. Sci. (Physics and Mathematics), Associate Professor, Deputy Director of the Regional Center for Nanotechnology

50 Let Oktyabrya Str. 94, Kursk 305040

akochura@mail.ruhttps://orcid.org/0009-0004-8571-8544КолпаковА. И.KolpakovA. I.

Колпаков Артём Игоревич, аспирант

ул. 50 лет Октября, д. 94, г. Курск 305040

Artem I. Kolpakov, Postgraduate Student

50 Let Oktyabrya Str. 94, Kursk 305040

artem.kolpakov.96@mail.ruЮго-Западный государственный университетРоссияSouthwest State UniversityRussian FederationМосковский физико-технический институт (национальный исследовательский университет)РоссияMoscow Institute of Physics and Technology (National Research University)Russian Federation202608082026162118131Copyright © Кузьменко А.П., Родионов В.В., Пугачевский М.А., Кочура А.В., Колпаков А.И., 20262026Кузьменко А.П., Родионов В.В., Пугачевский М.А., Кочура А.В., Колпаков А.И.Kuzmenko A.P., Rodionov V.V., Pugachevsky M.A., Kochura A.V., Kolpakov A.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://techusgu.elpub.ru/jour/article/view/426

Цель – комплексная характеризация композиционных материалов c Bi2O3, предназначенных для радиационной защиты биологических объектов и компонентов электронного оборудования от гамма-излучения в диапазоне энергий до 662 кэВ.

Методы

Методы. Экспериментальные образцы композиционного материала цилиндрической формы изготовлены из эпоксидно-диановой смолы ЭД-20 с отвердителем ПЭПА c добавлением либо порошка Bi2O3, либо со смесью Bi2O3 и ZnO в равном молярном соотношении. Характеризация их проводилась методами атомно-силовой и сканирующей (растровой) электронной микроскопии, а также энергодисперсионного и рентгенофазового анализа. Сравнивалось ослабление гамма-излучения лабораторного источника 137Сs мощностью до 10 мкЗв/ч по интенсивности скорости счёта модулей газоразрядных счетчиков Гейгера – Мюллера СБМ20-1, заключенных в оболочку из композиционного материала и без него.

Результаты

Результаты. С применением наноинструментария и структурного анализа определен гранулометрический состав наполнителей и распределение их в эпоксидной матрице, а также структура наночастиц оксидов висмута и цинка. С помощью источника гамма-излучения определены линейный и массовый коэффициенты ослабления композиционного материала, а также слой половинного ослабления полученных покрытий.

Заключение

Заключение. В композиционном поглотителе на основе либо порошка Bi2O3, либо со смесью Bi2O3 и ZnO в указанном диапазоне гамма-излучения задействованы два механизма взаимодействия: фотоэффект и комптоновское рассеивание. При использовании веб-базы данных XCOM: Photon Cross Sections Database для всех композиционных материалов с учётом их химической формулы и массового содержания оценены спектральные диапазоны основных механизмов ослабления. Поглощение за счёт проявления фотоэффекта для композиционных материалов преобладает вплоть до 400 кэВ. Максимум излучения источника 137Cs приходится на энергию фотонов при 662 кэВ, при котором массовые коэффициенты образцов с наночастицами Bi2O3 и со смесью Bi2O3 и ZnO равны с точностью до 10% и обусловлены эффектом Комптона.

Purpose – сomprehensive characterization of composite materials with Bi2O3 intended for radiation protection of biological objects and electronic equipment components from gamma radiation in the energy range up to 662 keV.

Methods

Methods. Experimental cylindrical composite material samples were made from epoxy-diane resin ED-20 with PEPA hardener, supplemented with either Bi2O3 powder or a mixture of Bi2O3 and ZnO in equal molar ratios. They were characterized using atomic force microscopy and scanning electron microscopy, as well as energy-dispersive analysis and phase analysis. The attenuation of gamma radiation from a laboratory source 137Cs with a power of up to 10 μSv/h was compared with the count rate intensity of gas-discharge Geiger-Müller counter modules SBM20-1, both encased in a composite material and without it.

Results

Results. Using nano instruments and structural analysis, the particle size distribution of the fillers and their distribution within the epoxy matrix were determined, as well as the structure of bismuth and zinc oxide nanoparticles. Using a gamma ray source, the linear and mass attenuation coefficients of the composite material, as well as the half-value layer of the resulting coatings, were determined.

Conclusion

Conclusion. In a composite absorber based on either Bi2O3 powder or a mixture of Bi2O3 and ZnO, two interaction mechanisms are involved in the specified gamma-ray range: the photoelectric effect and Compton scattering. Using the XCOM: Photon Cross Sections Database web database, the spectral ranges of the primary attenuation mechanisms were estimated for all composite materials, taking into account their chemical formula and mass content. Absorption due to the photoelectric effect predominates for composite materials up to 400 keV. The maximum emission from the 137Cs source occurs at a photon energy of 662 keV, at which the mass coefficients of the samples with these powders are approximately equal to within 10%, due to the Compton effect.

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The authors declare that there are no conflicts of interest present.