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Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal

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Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal. / Nagirnyi, V.; Stolovich, A.; Zazubovich, S. et al.
In: Journal of Physics: Condensed Matter, Vol. 7, No. 18, 05.1995, p. 3637-3653.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Nagirnyi, V, Stolovich, A, Zazubovich, S, Zepelin, V, Mihokova, E, Nikl, M, Pazzi, GP & Salvini, L 1995, 'Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal', Journal of Physics: Condensed Matter, vol. 7, no. 18, pp. 3637-3653. https://doi.org/10.1088/0953-8984/7/18/026

APA

Nagirnyi, V., Stolovich, A., Zazubovich, S., Zepelin, V., Mihokova, E., Nikl, M., Pazzi, G. P., & Salvini, L. (1995). Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal. Journal of Physics: Condensed Matter, 7(18), 3637-3653. https://doi.org/10.1088/0953-8984/7/18/026

Vancouver

Nagirnyi V, Stolovich A, Zazubovich S, Zepelin V, Mihokova E, Nikl M et al. Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal. Journal of Physics: Condensed Matter. 1995 May;7(18):3637-3653. doi: 10.1088/0953-8984/7/18/026

Author

Nagirnyi, V. ; Stolovich, A. ; Zazubovich, S. et al. / Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal. In: Journal of Physics: Condensed Matter. 1995 ; Vol. 7, No. 18. pp. 3637-3653.

Bibtex

@article{c648efaeaf264f899dad337365cc8a25,
title = "Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal",
abstract = "Four emission bands, all belonging to the main thallium centres, have been detected in CsI:Tl, and their spectral, polarization and kinetic characteristics have been studied at 0.35-320 K. A new model is proposed for the excited states responsible for the luminescence of thallium-doped caesium iodide. In this model, the main thallium centre is considered as a cluster consisting of a Tl+ ion and at least 12 I- and 11 Cs+ ions. Two weak ultraviolet emission bands of CsI:TI (3,31 and 3.09 eV) are ascribed to electronic transitions from trigonal and tetragonal Jahn-Teller minima of the tripler relaxed excited state, whose structure is similar to that of Tl+ centres in Fee alkali halides. Two intense visible bands (2.55 and 2.25 eV) are assumed to arise from two different ('weak' and 'strong') off-centre configurations of a self-trapped exciton perturbed by the Tl+ ion. The minima responsible for all the emission bands are located on the same adiabatic potential energy surface. The excitonic-like nature of visible emission could explain the high scintillation efficiency of CsI:Tl.",
keywords = "SELF-TRAPPED-EXCITON, ALKALI-HALIDE CRYSTALS, DECAY KINETICS, OPTICAL-PROPERTIES, HIGH-PRESSURE, EMISSION, IN+, KI, ABSORPTION, CSBR",
author = "V. Nagirnyi and A. Stolovich and S. Zazubovich and Viktor Zepelin and E. Mihokova and M. Nikl and Pazzi, {G. P.} and L. Salvini",
year = "1995",
month = may,
doi = "10.1088/0953-8984/7/18/026",
language = "English",
volume = "7",
pages = "3637--3653",
journal = "Journal of Physics: Condensed Matter",
issn = "0953-8984",
publisher = "IOP Publishing Ltd",
number = "18",

}

RIS

TY - JOUR

T1 - Peculiarities of the triplet relaxed excited-state structure and luminescence of a CsI:Tl crystal

AU - Nagirnyi, V.

AU - Stolovich, A.

AU - Zazubovich, S.

AU - Zepelin, Viktor

AU - Mihokova, E.

AU - Nikl, M.

AU - Pazzi, G. P.

AU - Salvini, L.

PY - 1995/5

Y1 - 1995/5

N2 - Four emission bands, all belonging to the main thallium centres, have been detected in CsI:Tl, and their spectral, polarization and kinetic characteristics have been studied at 0.35-320 K. A new model is proposed for the excited states responsible for the luminescence of thallium-doped caesium iodide. In this model, the main thallium centre is considered as a cluster consisting of a Tl+ ion and at least 12 I- and 11 Cs+ ions. Two weak ultraviolet emission bands of CsI:TI (3,31 and 3.09 eV) are ascribed to electronic transitions from trigonal and tetragonal Jahn-Teller minima of the tripler relaxed excited state, whose structure is similar to that of Tl+ centres in Fee alkali halides. Two intense visible bands (2.55 and 2.25 eV) are assumed to arise from two different ('weak' and 'strong') off-centre configurations of a self-trapped exciton perturbed by the Tl+ ion. The minima responsible for all the emission bands are located on the same adiabatic potential energy surface. The excitonic-like nature of visible emission could explain the high scintillation efficiency of CsI:Tl.

AB - Four emission bands, all belonging to the main thallium centres, have been detected in CsI:Tl, and their spectral, polarization and kinetic characteristics have been studied at 0.35-320 K. A new model is proposed for the excited states responsible for the luminescence of thallium-doped caesium iodide. In this model, the main thallium centre is considered as a cluster consisting of a Tl+ ion and at least 12 I- and 11 Cs+ ions. Two weak ultraviolet emission bands of CsI:TI (3,31 and 3.09 eV) are ascribed to electronic transitions from trigonal and tetragonal Jahn-Teller minima of the tripler relaxed excited state, whose structure is similar to that of Tl+ centres in Fee alkali halides. Two intense visible bands (2.55 and 2.25 eV) are assumed to arise from two different ('weak' and 'strong') off-centre configurations of a self-trapped exciton perturbed by the Tl+ ion. The minima responsible for all the emission bands are located on the same adiabatic potential energy surface. The excitonic-like nature of visible emission could explain the high scintillation efficiency of CsI:Tl.

KW - SELF-TRAPPED-EXCITON

KW - ALKALI-HALIDE CRYSTALS

KW - DECAY KINETICS

KW - OPTICAL-PROPERTIES

KW - HIGH-PRESSURE

KW - EMISSION

KW - IN+

KW - KI

KW - ABSORPTION

KW - CSBR

U2 - 10.1088/0953-8984/7/18/026

DO - 10.1088/0953-8984/7/18/026

M3 - Journal article

VL - 7

SP - 3637

EP - 3653

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 18

ER -