Recombination Processes in PbWO_{4}:Tb^{3+} Crystals

• Authors: S. Novosad , L. Kostyk , I. Novosad , O. Tsvetkova
• Languages of publication: EN

Abstracts

EN

In the paper the results of investigations of X-ray excitation spectra, thermostimulated luminescence and the influence of light illumination on the thermoluminescence glow curves of pure and Tb-doped PbWO_{4} crystals are presented. It is suggested that the F^{-}-centres are formed in PbWO_{4} crystals at filling oxygen vacancies near Pb^{3+} ions to three electrons under X-ray irradiation at 90 K. The nature of 108 K thermostimulated luminescence peak is connected with the [(WO_{3} + F^{-})-Pb^{3+}] associations. It was established that thermal or optical destruction of this peak leads to appearance of the radiative transitions of excitons localized near the [(WO_{3} + F)-Pb^{2+}] complex centres.

Keywords

EN

78.55.Hx; 78.60.Kn; 78.70.En

Discipline

• 78.70.En: X-ray emission spectra and fluorescence
• 78.60.Kn: Thermoluminescence
• 78.55.Hx: Other solid inorganic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 1
• Pages: 143-145

Dates

published

2010-01

Contributors

author

S. Novosad

• Lviv I. Franko National University, Universitetska st. 1, 79000 Lviv, Ukraine

author

L. Kostyk

• Lviv I. Franko National University, Universitetska st. 1, 79000 Lviv, Ukraine

author

I. Novosad

• Lviv I. Franko National University, Universitetska st. 1, 79000 Lviv, Ukraine

author

O. Tsvetkova

• Lviv I. Franko National University, Universitetska st. 1, 79000 Lviv, Ukraine

References

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Identifiers

DOI

10.12693/APhysPolA.117.143