Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10716779 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 5 Pages |
Abstract
Optical absorption, thermoluminescence (TL), and stationary and time-resolved spectra of X-ray luminescence (XL) and cathodic luminescence (CL) in anion-defective αâAl2O3 crystals have been studied. It was found that the XL and CL spectra were dominated by the luminescence of F+-centers over the nanosecond interval, Ali+â and Ti3+-centers over the microsecond interval, and F- and Cr3+-centers over the millisecond interval of the relaxation time. It was shown that the luminescence of F+-centers made the decisive contribution to the released energy at the first stage of relaxation. The CL light sum illuminated in the F-band correlated with the TL yield in radiation detectors based on αâAl2O3.
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Authors
A.I. Surdo, V.A. Pustovarov, V.S. Kortov, A.S. Kishka, E.I. Zinin,