Energy transfer mechanism in CsI:Eu crystal
| Parent link: | Journal of Luminescence Vol. 148.— 2014.— [P. 274-276] |
|---|---|
| Corporate Author: | |
| Other Authors: | , , , , |
| Summary: | Title screen 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. Режим доступа: по договору с организацией-держателем ресурса |
| Language: | English |
| Published: |
2014
|
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1016/j.jlumin.2013.12.020 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=652817 |