Transient absorption spectra and relaxation kinetics in Nb-doped PbWO4 scintillating crystals

S. Chernov; D. Millers; L. Grigorjeva; V. Pankratov

doi:10.1016/S1350-4487(01)00079-8

Transient absorption spectra and relaxation kinetics in Nb-doped PbWO₄ scintillating crystals

S. Chernov^*
, D. Millers
, L. Grigorjeva
, V. Pankratov

^*Corresponding author for this work

Laboratory of Spectroscopy, Institute of Solid State Physics

University of Latvia

Research output: Contribution to journal › Article › peer-review

Abstract

The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO₄ single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO₄ : Nb crystals.

Original language	English
Pages (from-to)	659-662
Number of pages	4
Journal	Radiation Measurements
Volume	33
Issue number	5
DOIs	https://doi.org/10.1016/S1350-4487(01)00079-8
Publication status	Published - 2001

Keywords

PbWO
PbWO : Nb
Scintillation yield
Transient absorption

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10.1016/S1350-4487(01)00079-8

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title = "Transient absorption spectra and relaxation kinetics in Nb-doped PbWO4 scintillating crystals",

abstract = "The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO4 single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO4 : Nb crystals.",

keywords = "PbWO, PbWO : Nb, Scintillation yield, Transient absorption",

author = "S. Chernov and D. Millers and L. Grigorjeva and V. Pankratov",

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doi = "10.1016/S1350-4487(01)00079-8",

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T1 - Transient absorption spectra and relaxation kinetics in Nb-doped PbWO4 scintillating crystals

AU - Chernov, S.

AU - Millers, D.

AU - Grigorjeva, L.

AU - Pankratov, V.

PY - 2001

Y1 - 2001

N2 - The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO4 single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO4 : Nb crystals.

AB - The spectra and relaxation kinetics of absorption induced by a pulsed electron beam were studied for undoped and Nb-doped PbWO4 single crystals. A significant influence of Nb doping on transient absorption was found. The influence of Nb doping on the relaxation kinetics is proposed to be due to an oxygen vacancy involving electron-hole recombination. A delay was observed (35-50 ns) between the growth of F-centers and the irradiation pulse. A large portion of the F-centers decays within ∼16 μs due to recombination with mobile holes. The prolonged recombination processes are responsible for the decrease of the scintillation yield in PbWO4 : Nb crystals.

KW - PbWO

KW - PbWO : Nb

KW - Scintillation yield

KW - Transient absorption

UR - https://www.scopus.com/pages/publications/0034742070

U2 - 10.1016/S1350-4487(01)00079-8

DO - 10.1016/S1350-4487(01)00079-8

M3 - Article

AN - SCOPUS:0034742070

SN - 1350-4487

VL - 33

SP - 659

EP - 662

JO - Radiation Measurements

JF - Radiation Measurements

IS - 5

ER -

Transient absorption spectra and relaxation kinetics in Nb-doped PbWO₄ scintillating crystals

Abstract

Keywords

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