Low-temperature luminescence and thermally stimulated luminescence of BeO: Mg single crystals

DIRECT LUMINESCENCE AND THERMALLY STIMULATED LUMINESCENCE OF 4H CdI2

Direct luminescence (DL) spectra of 4H Cd12 in the spectral region 1.8-3.4 eV at temperatures between 9.3 and 215 K and thermally stimulated luminescence (TSL) spectra are reported. The DL spectra consist of several overlapping broad emission bands. These bands are due to radiative recombination of localized (trapped) electrons with localized (trapped) holes. With a simple theory, which takes i...

Low temperature X-ray luminescence of KNbO3 crystals

We have studied X-ray luminescence of KNbO3 single crystal. The 575 nm luminescence band has been studied in the temperature range of 15±45 K. The quenching parameters were found to be Q ˆ 12 3 meV and m ˆ 4 10 sÿ1. No luminescence has been observed under heavy ion excitation (Kr ions, 8.63 MeV/amu) even at 15 K. Ó 2000 Elsevier Science B.V. All rights reserved. PACS: 78.60.-b

Dimensionless study of the total response of thermally stimulated luminescence

The response of thermally stimulated luminescence (TSL) is investigated theoretically. An original dimensionless treatment is proposed, first to highlight the key dimensionless factors rationalizing the competition between the mechanisms at play during the TSL readout, and second to clean up the approach from any particular values of the relevant physical parameters. The approach holds for an u...

Thermally stimulated luminescence and EPR studies on topaz.

In the present work, electron paramagnetic resonance (EPR) spectra and thermoluminescence (TL) emission of colourless natural topaz from Santo Antônio do Jacinto, Brazil, was studied as a function of thermal treatment and gamma irradiation dose, focussing on the use of this material as a radiation dosimeter. EPR measurements on "as-received" samples at room temperature provided signals in the r...

Luminescence of Acceptors in Mg-Doped GaN