Short-living absorption and emission of CsI(Na); Journal of Luminescence; Vol. 131, iss. 12
| Parent link: | Journal of Luminescence Vol. 131, iss. 12.— 2011.— [P. 2579-2581] |
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| Daljnji autori: | , , , |
| Sažetak: | Title screen This paper investigates the short-living absorption and the emission of CsI(Na) under a pulsed electron beam (Еe=0.25 MeV, t1/2=15 ns and W=0.003…0.16 J/cm2). The bands of singlet self-trapped excitons, as well as Na0 and Vk color centers have been detected in the transient absorption spectrum of CsI(Na). It has been found that the activator luminescence spectrum, peaking at 3.0 eV, fits a Gaussian (Em=3.0 eV and FWHM=0.44±0.02 eV at 80 K) and remains the same at different time delays within 10−8-10−3 s. The decay kinetics of the 3.0 eV emission has one nanosecond exponential component and two microsecond ones with time constants 1.0 and 3.0 μs, which remain unchanged within 78-150 K. It is concluded that the activator emission is due to the radiative annihilation of sodium-perturbed two halide excitons from the non-relaxed singlet state. The pathways of such excitons creation are discussed. Режим доступа: по договору с организацией-держателем ресурса |
| Jezik: | engleski |
| Izdano: |
2011
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| Teme: | |
| Online pristup: | http://dx.doi.org/10.1016/j.jlumin.2011.06.037 |
| Format: | Elektronički Poglavlje knjige |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=652818 |
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| 200 | 1 | |a Short-living absorption and emission of CsI(Na) |f V. Yu. Yakovlev [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 12 tit.] | ||
| 330 | |a This paper investigates the short-living absorption and the emission of CsI(Na) under a pulsed electron beam (Еe=0.25 MeV, t1/2=15 ns and W=0.003…0.16 J/cm2). The bands of singlet self-trapped excitons, as well as Na0 and Vk color centers have been detected in the transient absorption spectrum of CsI(Na). It has been found that the activator luminescence spectrum, peaking at 3.0 eV, fits a Gaussian (Em=3.0 eV and FWHM=0.44±0.02 eV at 80 K) and remains the same at different time delays within 10−8-10−3 s. The decay kinetics of the 3.0 eV emission has one nanosecond exponential component and two microsecond ones with time constants 1.0 and 3.0 μs, which remain unchanged within 78-150 K. It is concluded that the activator emission is due to the radiative annihilation of sodium-perturbed two halide excitons from the non-relaxed singlet state. The pathways of such excitons creation are discussed. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Luminescence | ||
| 463 | |t Vol. 131, iss. 12 |v [P. 2579-2581] |d 2011 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a люминесценция | |
| 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 Ganzha |b Yu. S. |g Yury Sergeevich | |
| 801 | 2 | |a RU |b 63413507 |c 20170206 |g RCR | |
| 856 | 4 | |u http://dx.doi.org/10.1016/j.jlumin.2011.06.037 | |
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