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.
| Original language | English |
|---|---|
| Pages (from-to) | 34-37 |
| Number of pages | 4 |
| Journal | Journal of Luminescence |
| Volume | 173 |
| DOIs | |
| Publication status | Published - 1 May 2016 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Chemistry(all)
- Biochemistry
- Biophysics
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Time-resolved spectroscopy of CsI(CO3) scintillator. / Yakovlev, V.; Trefilova, L.; Lebedinsky, A.; Daulet, Z.; Dubtsov, I.
In: Journal of Luminescence, Vol. 173, 01.05.2016, p. 34-37.Research output: Contribution to journal › Article
}
TY - JOUR
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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UR - http://www.scopus.com/inward/citedby.url?scp=84954419431&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2015.12.044
DO - 10.1016/j.jlumin.2015.12.044
M3 - Article
VL - 173
SP - 34
EP - 37
JO - Journal of Luminescence
JF - Journal of Luminescence
SN - 0022-2313
ER -