Abstract
This paper studies the scintillation process in CsI:Eu crystal exposed to the pulse electron irradiation (E=0.25 MeV, t1/2=15 ns and W=0.003 J/cm2). It has been proved that the energy transfer from the lattice to Eu2+ ions in CsI:Eu occurs through the re-absorption of STE emission. The proposed model rests on the following experimental facts: (1) the activator emission at 2.68 eV rises gradually after the decay of the excitation pulse even at temperature lower than 90 K when Vk centers are immobile; (2) the rise time of 2.68 eV emission and the decay time of STE emission have the same temperature dependences at T=78-300 K; (3) the excitation spectrum of 2.68 eV emission overlaps the emission spectrum of STE.
| Original language | English |
|---|---|
| Pages (from-to) | 274-276 |
| Number of pages | 3 |
| Journal | Journal of Luminescence |
| Volume | 148 |
| DOIs | |
| Publication status | Published - 1 Apr 2014 |
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Keywords
- Cathodoluminescence
- CsI:Eu
- Energy transfer
ASJC Scopus subject areas
- Biophysics
- Atomic and Molecular Physics, and Optics
- Chemistry(all)
- Biochemistry
- Condensed Matter Physics
Cite this
Energy transfer mechanism in CsI : Eu crystal. / Yakovlev, V.; Trefilova, L.; Karnaukhova, A.; Ovcharenko, N.
In: Journal of Luminescence, Vol. 148, 01.04.2014, p. 274-276.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Energy transfer mechanism in CsI
T2 - Eu crystal
AU - Yakovlev, V.
AU - Trefilova, L.
AU - Karnaukhova, A.
AU - Ovcharenko, N.
PY - 2014/4/1
Y1 - 2014/4/1
N2 - This paper studies the scintillation process in CsI:Eu crystal exposed to the pulse electron irradiation (E=0.25 MeV, t1/2=15 ns and W=0.003 J/cm2). It has been proved that the energy transfer from the lattice to Eu2+ ions in CsI:Eu occurs through the re-absorption of STE emission. The proposed model rests on the following experimental facts: (1) the activator emission at 2.68 eV rises gradually after the decay of the excitation pulse even at temperature lower than 90 K when Vk centers are immobile; (2) the rise time of 2.68 eV emission and the decay time of STE emission have the same temperature dependences at T=78-300 K; (3) the excitation spectrum of 2.68 eV emission overlaps the emission spectrum of STE.
AB - This paper studies the scintillation process in CsI:Eu crystal exposed to the pulse electron irradiation (E=0.25 MeV, t1/2=15 ns and W=0.003 J/cm2). It has been proved that the energy transfer from the lattice to Eu2+ ions in CsI:Eu occurs through the re-absorption of STE emission. The proposed model rests on the following experimental facts: (1) the activator emission at 2.68 eV rises gradually after the decay of the excitation pulse even at temperature lower than 90 K when Vk centers are immobile; (2) the rise time of 2.68 eV emission and the decay time of STE emission have the same temperature dependences at T=78-300 K; (3) the excitation spectrum of 2.68 eV emission overlaps the emission spectrum of STE.
KW - Cathodoluminescence
KW - CsI:Eu
KW - Energy transfer
UR - http://www.scopus.com/inward/record.url?scp=84892580053&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84892580053&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2013.12.020
DO - 10.1016/j.jlumin.2013.12.020
M3 - Article
VL - 148
SP - 274
EP - 276
JO - Journal of Luminescence
JF - Journal of Luminescence
SN - 0022-2313
ER -