ЖОҒАРЫ ЭНЕРГИЯЛЫ КСЕНОН ИОНДАРЫМЕН СӘУЛЕЛЕНГЕН Y3Al5O12 (100) МОНОКРИСТАЛДАРЫНЫҢ ОПТИКАЛЫҚ ҚАСИЕТТЕРІ

YAG (Y₃Al₅O₁₂) маңызды оптикалық материалдардың бірі болып табылады. Ол қатты денелі лазерлерде, ақ жарықдиодты түрлендіргіш ретінде жарықтандыру құрылғыларында, сонымен қатар сцинтилляциялық технологияда кеңінен қолданылады. Бұл жұмыста YAG (100) монокристалдары 230 МэВ энергиямен Xe иондарымен 6·10¹⁰–10¹³ ион/см² флюенске дейін сәулелендірілді, бұл материалдың қатан радиация өрістеріндегі әрекетін зерттеуге мүмкіндік береді. Сәулеленген YAG кристалдарын талдау үшін келесі зерттеу әдістері қолданылды: оптикалық жұтылу спектроскопиясы және комбинациялық шашырау спектроскопиясы. Жұтылу спектрлерін талдау сәулеленген YAG үлгілерінде боялу орталықтарының түзілуін көрсетеді. Әртүрлі типтегі нүктелік ақаулардың концентрациясы флюенстің жоғарылауымен айтарлықтай артады. Айырымдық спектрлер 4,1–5,2 эВ диапазонында қабаттасатын жолақтарды анықтайды, олар F₂ орталықтарының әртүрлі конфигурацияларына сәйкес келеді. Флюенс ұлғайған сайын беткі қабаты аморфты болады, және материал аморфизацияланады. Раман спектрлерінің жоғары энергиялық модалары 10¹⁰ ион/см² флюенс кезінде кеңейе бастайды. Xe иондарының әсер етуінің жоғары дәрежесін ескере отырып, 10¹² ион/см² флюенстен бастап барлық катион-аниондық байланыстар іс жүзінде жойылады деп айтуға болады.

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