nucВестник НЯЦ РКNNC RK Bulletin1729-75161729-7885Национальный ядерный центр Республики Казахстан10.52676/1729-7885-2023-3-48-53nuc-534Research ArticleСтатьиФОРМИРОВАНИЕ ДЕФЕКТОВ В АНИОННОЙ И КАТИОННОЙ ПОДРЕШЕТКЕ КРИСТАЛЛОВ MgAl2O4 ОБЛУЧЕННЫХ ВЫСОКОЭНЕРГЕТИЧЕСКИМИ ИОНАМИ КСЕНОНАFORMATION OF DEFECTS IN THE ANION AND CATION SUBLATTICE OF MgAl2O4 CRYSTALS IRRADIATED BY HIGH ENERGY XENON IONShttps://orcid.org/0000-0001-6366-6705АкилбековА. Т.AkilbekovA.

Абдираш Тасанович Акилбеков - доктор физико-математических наук, профессор кафедры Технической физики.

Астана

Astana

akilbek_ata@mail.ruhttps://orcid.org/0000-0003-0048-0959ДаулетбековаА. К.DauletbekovaA.

Алма Кабдиновна Даулетбекова – доктор физико-математических наук, профессор кафедры Технической физики.

Астана

Astana

alma_dauletbek@mail.ruhttps://orcid.org/0000-0002-1411-3917КиряковА. Н.KiriakovA.

Арсений Николаевич Киряков - Доцент, Младший научный сотрудник, Заведующий учебной лабораторией, Кандидат физико-математических наук (01.04.07 - Физика конденсированного состояния).

Екатеринбург

Yekaterinburg

arseny.kiriakov@urfu.ruhttps://orcid.org/0000-0002-6827-5567АралбаеваГ. М.AralbayevaG.

Гульнара Мырзахановна Аралбаева - PhD, и.о. доцент кафедры Технической физики.

Астана

Astana

agm_555@mail.ruОспановаЖ. Д.OspanovaZh.

Жулдуз Джумагалиевна Оспанова - докторант по специальности Техническая физика.

Астана

Astana

zhulduz-ospan@mail.ruЕвразийский национальный университет им. Л. Н. ГумилеваКазахстанL.N. Gumilyov Eurasian National UniversityKazakhstanУральский федеральный университет имени Б.Н. ЕльцинаРоссияUral Federal UniversityRussian Federation202330092023034853Copyright © Акилбеков А.Т., Даулетбекова А.К., Киряков А.Н., Аралбаева Г.М., Оспанова Ж.Д., 20232023Акилбеков А.Т., Даулетбекова А.К., Киряков А.Н., Аралбаева Г.М., Оспанова Ж.Д.Akilbekov A., Dauletbekova A., Kiriakov A., Aralbayeva G., Ospanova Z.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journals.nnc.kz/jour/article/view/534

В работе представлены результаты исследования оптических характеристик алюмо-магниевой шпинели, облученной ионами 220 МэВ Xe, моделирующими воздействие осколков деления ядерного топлива. В ходе экспериментов измерялись спектры пропускания в инфракрасной (ИК) области (240–12500) cм−1, спектры оптического поглощения в диапазоне (2–7) эВ, Рамановские спектры измерялись по глубине проникновения иона, от поверхности до 30 мкм. В спектре оптического поглощения (2–8) эВ облученных кристаллов шпинели наблюдается широкая сложная полоса радиационно-индуцированного поглощения с пиком в районе 5,3 эВ, связанная с электронными центрами окраски типа F+ и F, а дырочные центры окраски ответственны за оптическое поглощение при ~ (3–4) эВ. В ближней ИК области кристалл сохраняет прозрачность. В Рамановском спектре помимо характерных для идеального кристалла Рамановских мод проявляются также дополнительные моды, A1g* (720 см−1), и Eg* (385 см−1), в основном в виде ассиметричного плеча основной Eg моды. С ростом глубины отношение A1g*/Eg увеличивается, достигая максимального значения 0,05 на 6 мкм и остается практически неизменным до конца пробега иона Xe 14 мкм, с дальнейшим уменьшением до 0,045 на глубине 30 мкм. Таким образом, при облучении ионами 220 МэВ Xe происходит катионное перемешивание вдоль ионного пути.

In this work, the optical characteristics of an aluminum-magnesium spinel irradiated with 220 MeV Xe ions, which simulate the effect of nuclear fuel fission fragments were studied. During the experiments, the transmission spectra were measured in the IR region (240–12500) cm−1, the optical absorption spectra in the range (2–7) eV, the Raman spectra were measured by the ion penetration depth, from the surface to 30 µm. In the optical absorption spectrum (2–8) eV of irradiated spinel crystals, a wide complex band of radiation-induced absorption is observed with a peak in the region of 5.3 eV associated with electronic color centers of the F + and F type, and hole color centers are responsible for optical absorption at ~ (3–4) eV. In the near IR region, the crystal retains its transparency. In the Raman spectrum, in addition to the Raman modes characteristic of an ideal crystal, additional modes, A1g* (720 cm−1), and Eg* (385 cm−1), appear mainly in the form of an asymmetric shoulder of the main Eg mode. As the depth increases, the A1g*/Eg ratio increases, reaching a maximum value of 0.05 at 6 µm, and remains practically unchanged until the end of the Xe ion range of 14 µm, and with a further decrease to 0.045 at a depth of 30 µm. That is, when irradiated with 220 MeV Xe ions, cation mixing occurs along the ion path.

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