Электронный каталог

Статья

Kirilkin, N.S.
Effect of Irradiation Temperature on the Optical Properties and Structure of Swift Heavy Ion Irradiated Al&sub(2)O&sub(3) / N.S.Kirilkin, R.A.Rymzhanov, V.A.Skuratov, [a.o.]. – Text : electronic // Journal of Nuclear Materials. – 2026. – Vol. 625. – P. 156525. – URL: https://doi.org/10.1016/j.jnucmat.2026.156525. – Bibliogr.: 63.

This research aims to investigate damage morphology and photoluminescence (PL) in single crystalline Al&sub(2)O&sub(3) irradiated with high energy Xe ions (152 and 230 MeV) in the temperature range from 80 K to 870 K to fluences of 10&sup(11) cm&sup(-2) and 10&sup(13) cm&sup(-2). PL spectra were measured under 445 nm excitation from the subsurface layer using laser scanning confocal microscopy (LSCM), which limited probed thickness to approximately 2 *mm, corresponding to the region affected by ion-track-related radiation defects. The PL spectra exhibit a broad, multicomponent band with maximum at 560 nm, attributed to F&sup(2+)&sub(2) color centers. It was found that, in addition to the main band centered near 560 nm, a separate emission band appears at approximately 630 nm. The contribution of the 630 nm band to the total photoluminescence yield increases with irradiation temperature and becomes dominant after irradiation at 870 K, but the temperature dependences of the individual spectral components follow the same trend. The luminescence decay curves measured at 560 and 630 nm exhibit two components, whose relative weights depend on both ion fluence and irradiation temperature. Suggesting enhanced clustering of point defects at high temperature due to ion track region overlapping, such behavior may indicate that the 630



Спец.(статьи,препринты) = С 349.1 - Действие излучения на материалы$
ОИЯИ = ОИЯИ (JINR)2026