- PII
- 10.31857/S0023476124020187-1
- DOI
- 10.31857/S0023476124020187
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume 69 / Issue number 2
- Pages
- 345-352
- Abstract
- The luminescence and scintillation properties of YAG:Ce crystals grown from the melts in vacuum has been analysed. We have investigated absorption spectra, X-ray excited luminescence (XRL), XRL decay kinetics and scintillation light yield in a wide range of activator concentrations (from 0.0036 at.% to 1.175 at.% substitution of Y in the c-positions of garnet structure). The effective quenching of the intrinsic luminescence of antisite and vacancy defects of the crystal in the UV region with increasing activator concentration has been determined. The optimal concentration of the activator has been determined in order to increase the XRL intensity and the light output of scintillations of Сe3+ ions, taking into account the technological peculiarities of growing optically perfect single crystals with high concentration of Сe3+ ions by using the method of horizontal directional crystallisation in vacuum. The relations between the XRL kinetics and the activator concentration have been investigated. It has showed the possibility to obtain crystals with photon yield up to 25,000 ph/MeV.
- Keywords
- Date of publication
- 15.09.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 14
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