Hole capture in PbWO{sub 4}:Mo,La(Y) scintillator crystals

Journal Article · Tue Mar 01 00:00:00 EST 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.83.094123· OSTI ID:21538204

Laguta, V V; Buryi, M; Nikl, M; Rosa, J ^[1]; Zazubovich, S ^[2]

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1. Institute of Physics AS CR, Cukrovarnicka 10, 162 53 Prague (Czech Republic)
2. Institute of Physics, University of Tartu, Riia 142, 51014 Tartu (Estonia)

The processes of hole localization in PbWO{sub 4}:Mo,La(Y) single crystals were investigated by electron spin resonance. It was found that the holes created by uv irradiation are trapped at the regular oxygen ions in the vicinity of perturbing defects such as lead vacancies, impurity ions (La,Y), and other lattice imperfections. This leads to a variety of O{sup -} centers which differ in both the thermal stability (from about 160 K up to 240 K) and spectroscopic parameters. The thermal release of such trapped holes and their subsequent recombination with electrons stored at different traps, including (MoO{sub 4}){sup 3-} complexes, are accompanied by the appearance of the thermally stimulated luminescence peaks located at around 190 K and in the 225-250 K range.

• OSTI ID: 21538204
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 9; Other Information: DOI: 10.1103/PhysRevB.83.094123; (c) 2011 American Institute of Physics; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAPTURE
CRYSTAL DEFECTS
ELECTRON SPIN RESONANCE
ELECTRONS
HOLES
IMPURITIES
IRRADIATION
LANTHANUM ADDITIONS
LEAD TUNGSTATES
MOLYBDATES
MONOCRYSTALS
OXYGEN COMPOUNDS
OXYGEN IONS
RECOMBINATION
STABILITY
TEMPERATURE RANGE 0065-0273 K
THERMOLUMINESCENCE
ULTRAVIOLET RADIATION
VACANCIES
YTTRIUM ADDITIONS
ALLOYS
CHARGED PARTICLES
CRYSTAL STRUCTURE
CRYSTALS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EMISSION
FERMIONS
IONS
LANTHANUM ALLOYS
LEAD COMPOUNDS
LEPTONS
LUMINESCENCE
MAGNETIC RESONANCE
MOLYBDENUM COMPOUNDS
PHOTON EMISSION
POINT DEFECTS
RADIATIONS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
REFRACTORY METAL COMPOUNDS
RESONANCE
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS