glonucsecГлобальная ядерная безопасностьGlobal Nuclear Safety2305-414X2499-9733National Research Nuclear University "MEPhI"10.26583/gns-2020-02-08glonucsec-25Research ArticleЭКСПЛУАТАЦИЯ ОБЪЕКТОВ АТОМНОЙ ОТРАСЛИOPERATION OF FACILITIES NUCLEAR INDUSTRYХАРАКТЕРИСТИКИ ПОЛЕЙ ФОТОННОГО ИЗЛУЧЕНИЯ В СВИНЦЕ ДЛЯ ИСТОЧНИКОВ ФОТОНОВ С ЭНЕРГИЯМИ ОТ 10 ДО 50 МэВPhoton Radiation Fields Characteristics in Lead for Photon Sources With Energies From 10 to 50 MeVhttps://orcid.org/0000-0003-0099-153XАльхагаишИ. Х.AlhagaishI. K.alhigesh@gmail.comСахаровВ. К.SakharovV. K.noemail@neicon.ruИнститут ядерной физики и технологий Национального исследовательского ядерного университета «МИФИ»Institute of Nuclear Physics and Technology (INP&T), National Research Nuclear University «MEPhI»20200106202002100108Copyright © Альхагаиш И.Х., Сахаров В.К., 20222022Альхагаиш И.Х., Сахаров В.К.Alhagaish I.K., Sakharov V.K.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://glonucsec.elpub.ru/jour/article/view/25

По результатам расчетов методом Монте-Карло пространственных распределений энергии фотонов в свинце от точечных изотропных и плоских однонаправленных моноэнергетических источников с энергиями 10-50 МэВ определенные кратности ослабления воздушной кермы и дозовые факторы накопления рассматриваемым материалам. В расчетах учитывается вклад флуоресценции, аннигиляционного излучения и тормозного излучения. Показана независимость факторов накопления и кратностей ослабления от углового распределения излучения источника и слабая зависимость кратностей ослабления от его энергии в диапазоне энергий 30-50 МэВ. Определены поправки на барьерную защиту и отмечена их независимость от толщины защиты и энергии фотонов источника. Полученная информация позволяет уменьшить погрешности в результатах расчетов толщины противорадиационной защиты электронных ускорителей при высоких энергиях, используя разработанные инженерные методы расчета. Полученная информация может быть также использована в расчетах защиты от тормозного излучения электронных ускорителей инженерными методами.

According to Monte Carlo calculations of spatial distributions of photon energy in Lead from point isotropic and plane mon-directional monoenergetic sources with energies of 10-50 MeV, define the attenuation coefficient of air Kerma and the dose buildup factors are determined for the studied material. The calculations take into account the contribution of fluorescence, annihilation radiation, and bremsstrahlung radiation. The independence of the Buildup Factors and attenuation coefficient from the angular distribution of the source radiation and the weak dependence of the attenuation coefficient on its energy in the range of 30-50 MeV are shown. Corrections for barrier protection were determined and their independence from the thickness of the shielding material and the photon energy of the source was noted. The obtained information makes it possible to reduce errors in the results of calculations of the thickness for anti-radiation protection of electronic accelerators at high energies, using the developed engineering methods of calculation. The obtained information can also be used in calculations of protection against bremsstrahlung radiation of electronic accelerators by engineering methods.

электронные ускорителитормозное излучениезащитадозыфактор накопленияКратности ослабленияМонте-Карлоelectronic acceleratorsbremsstrahlung radiationprotectiondoseaccumulation factorattenuation MultiplicityMonte CarloReferencesSakharov V.K., Borisenko A.V., Dozovyye faktory nakopleniya v betone, zheleze i svintse dlya istochnikov monoenergeticheskikh fotonov s energiyami ot 10 do 50 MeV [Dose factors of accumulation in concrete, iron and lead for monoenergetic photon sources with energies from 10 to 50 MeV]. ZH. Atomnaya energiya [Atomic energy], 114, issue.6, 2014 (in Russian).Sakharov V.K., Borisenko A.V., Dozovyye faktory nakopleniya v betone, zheleze i svintse dlya istochnikov monoenergeticheskikh fotonov s energiyami ot 10 do 50 MeV [Dose factors of accumulation in concrete, iron and lead for monoenergetic photon sources with energies from 10 to 50 MeV]. ZH. Atomnaya energiya [Atomic energy], 114, issue.6, 2014 (in Russian).American National Standard. 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The authors declare that there are no conflicts of interest present.