Luminescence of Eu2+-vc- dipoles and their associates in CsI:Eu crystals; Journal of Luminescence; Vol. 132, iss. 9
| Parent link: | Journal of Luminescence Vol. 132, iss. 9.— 2012.— [P. 2476–2478] |
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| Autor kompanije: | |
| Daljnji autori: | , , , |
| Sažetak: | Title screen Spectral-kinetics properties of photo-scintillation excited with single light pulses of a nitrogen laser (λ=337.1 nm, t1/2=5 ns, Q=1 mJ) have been studied in CsI:Eu crystals at temperature within 80-300 K. It is found that the exponential decay of 463 nm emission band has a time constant which grows from 0.85 μs at 78 K to 1.6 μs at 380 K. Such an anomalous temperature behavior of 463 nm emission decay kinetics is discussed in terms of the crystal thermal expansion. It has been proposed that 463 nm emission is caused by a cluster center consisting of three dipoles Eu2+vc− bounded with each other in a hexagon. Owing to the exchange resonance in the cluster, the energy passes from an excited dipole to a non-excited one and the distance between them gets longer due to thermal expansion of the crystal. Режим доступа: по договору с организацией-держателем ресурса |
| Jezik: | engleski |
| Izdano: |
2012
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| Teme: | |
| Online pristup: | http://dx.doi.org/10.1016/j.jlumin.2012.04.026 |
| Format: | Elektronički Poglavlje knjige |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=652815 |
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| 200 | 1 | |a Luminescence of Eu2+-vc- dipoles and their associates in CsI:Eu crystals |f V. Yu. Yakovlev [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 9 tit.] | ||
| 330 | |a Spectral-kinetics properties of photo-scintillation excited with single light pulses of a nitrogen laser (λ=337.1 nm, t1/2=5 ns, Q=1 mJ) have been studied in CsI:Eu crystals at temperature within 80-300 K. It is found that the exponential decay of 463 nm emission band has a time constant which grows from 0.85 μs at 78 K to 1.6 μs at 380 K. Such an anomalous temperature behavior of 463 nm emission decay kinetics is discussed in terms of the crystal thermal expansion. It has been proposed that 463 nm emission is caused by a cluster center consisting of three dipoles Eu2+vc− bounded with each other in a hexagon. Owing to the exchange resonance in the cluster, the energy passes from an excited dipole to a non-excited one and the distance between them gets longer due to thermal expansion of the crystal. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Luminescence | ||
| 463 | |t Vol. 132, iss. 9 |v [P. 2476–2478] |d 2012 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
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| 701 | 1 | |a Yakovlev |b V. Yu. |c specialist in the field of lightning engineering |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1949- |g Viktor Yurjevich |3 (RuTPU)RU\TPU\pers\35728 |9 18886 | |
| 701 | 1 | |a Trefilova |b L. N. |g Larisa Nikolaevna | |
| 701 | 1 | |a Мелешко |b А. А. |c специалист в области светотехники |c ассистент, доцент Томского политехнического университета, кандидат физико-математических наук |f 1983- |g Анна Алексеевна |3 (RuTPU)RU\TPU\pers\37814 |9 20528 | |
| 701 | 1 | |a Ovcharenko |b N. N. |g Nikolay Nikolaevich | |
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| 856 | 4 | |u http://dx.doi.org/10.1016/j.jlumin.2012.04.026 | |
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