Time-resolved spectroscopy of CsI(CO<sub>3</sub>) scintillator

Abstract

The spectral-kinetics characteristics of short-living absorption and luminescence induced by an electron pulse irradiation (E_e=0.25 MeV, t_1/2= 7ns, W=2×10¹⁰÷4×10¹² electron/cm²) in CsI(CO₃) crystal are studied. It is shown that the scintillation pulse of CsI(CO₃) crystal is caused by the radiative annihilation of perturbed two-halogen excitons of two types, which are located in nearby impurity-vacancy dipole [CO₃ ^2--υ_a ⁺] anion sites. The processes responsible for post-radiation rise and decay of both CO₃ ^2--related luminescence bands with maxima at 2.8 and 3.2 eV are monomolecular with the thermal activation energy E_rise=0.1 eV and E_decay=0.05 eV. The cathodoluminescence pulse kinetics is discussed in the terms of the thermally assistant release of holes captured by CO₃ ^2--ions and the formation of CO₃ ^2--perturbed two-halide excitons.

Original language	English
Pages (from-to)	34-37
Number of pages	4
Journal	Journal of Luminescence
Volume	173
DOIs	https://doi.org/10.1016/j.jlumin.2015.12.044
Publication status	Published - 1 May 2016

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Chemistry(all)
Biochemistry
Biophysics

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10.1016/j.jlumin.2015.12.044

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Yakovlev, V., Trefilova, L., Lebedinsky, A., Daulet, Z., & Dubtsov, I. (2016). Time-resolved spectroscopy of CsI(CO₃) scintillator. Journal of Luminescence, 173, 34-37. https://doi.org/10.1016/j.jlumin.2015.12.044

@article{6142fc239108489f868f5a5f37ff07ad,

title = "Time-resolved spectroscopy of CsI(CO3) scintillator",

abstract = "The spectral-kinetics characteristics of short-living absorption and luminescence induced by an electron pulse irradiation (Ee=0.25 MeV, t1/2= 7ns, W=2×1010÷4×1012 electron/cm2) in CsI(CO3) crystal are studied. It is shown that the scintillation pulse of CsI(CO3) crystal is caused by the radiative annihilation of perturbed two-halogen excitons of two types, which are located in nearby impurity-vacancy dipole [CO3 2--υa +] anion sites. The processes responsible for post-radiation rise and decay of both CO3 2--related luminescence bands with maxima at 2.8 and 3.2 eV are monomolecular with the thermal activation energy Erise=0.1 eV and Edecay=0.05 eV. The cathodoluminescence pulse kinetics is discussed in the terms of the thermally assistant release of holes captured by CO3 2--ions and the formation of CO3 2--perturbed two-halide excitons.",

author = "V. Yakovlev and L. Trefilova and A. Lebedinsky and Z. Daulet and I. Dubtsov",

year = "2016",

month = may,

day = "1",

doi = "10.1016/j.jlumin.2015.12.044",

language = "English",

volume = "173",

pages = "34--37",

journal = "Journal of Luminescence",

issn = "0022-2313",

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T1 - Time-resolved spectroscopy of CsI(CO3) scintillator

AU - Yakovlev, V.

AU - Trefilova, L.

AU - Lebedinsky, A.

AU - Daulet, Z.

AU - Dubtsov, I.

PY - 2016/5/1

Y1 - 2016/5/1

N2 - The spectral-kinetics characteristics of short-living absorption and luminescence induced by an electron pulse irradiation (Ee=0.25 MeV, t1/2= 7ns, W=2×1010÷4×1012 electron/cm2) in CsI(CO3) crystal are studied. It is shown that the scintillation pulse of CsI(CO3) crystal is caused by the radiative annihilation of perturbed two-halogen excitons of two types, which are located in nearby impurity-vacancy dipole [CO3 2--υa +] anion sites. The processes responsible for post-radiation rise and decay of both CO3 2--related luminescence bands with maxima at 2.8 and 3.2 eV are monomolecular with the thermal activation energy Erise=0.1 eV and Edecay=0.05 eV. The cathodoluminescence pulse kinetics is discussed in the terms of the thermally assistant release of holes captured by CO3 2--ions and the formation of CO3 2--perturbed two-halide excitons.

AB - The spectral-kinetics characteristics of short-living absorption and luminescence induced by an electron pulse irradiation (Ee=0.25 MeV, t1/2= 7ns, W=2×1010÷4×1012 electron/cm2) in CsI(CO3) crystal are studied. It is shown that the scintillation pulse of CsI(CO3) crystal is caused by the radiative annihilation of perturbed two-halogen excitons of two types, which are located in nearby impurity-vacancy dipole [CO3 2--υa +] anion sites. The processes responsible for post-radiation rise and decay of both CO3 2--related luminescence bands with maxima at 2.8 and 3.2 eV are monomolecular with the thermal activation energy Erise=0.1 eV and Edecay=0.05 eV. The cathodoluminescence pulse kinetics is discussed in the terms of the thermally assistant release of holes captured by CO3 2--ions and the formation of CO3 2--perturbed two-halide excitons.

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JF - Journal of Luminescence

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