Time-resolved Ax-luminescence of NaI:Tl under electron pulse irradiation; Functional Materials; Vol. 23, № 4
| Parent link: | Functional Materials Vol. 23, № 4.— 2016.— [P. 540-545] |
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| 団体著者: | |
| その他の著者: | , , , |
| 要約: | Title screen This paper studies spectral-kinetic properties of NaI:Tl cathodoluminescence registered in the region of Ax-band with maximum 425 nm within the time interval of 10-8-10-2 s. Ax-luminescence of NaI:Tl crystal has been excited with an electron pulse (Ee = 0.25 MeV, t1/2 = 10 ns, W = 0.003...0.16 J/cm2) at temperatures in the range of 65-300 K. It has been found that the cathodoluminescence kinetics of NaI:Tl crystal at 425 nm has beside the exponential decay (? = 235 ns at T = 295 K) also three more components: the fastest exponential decay (? = 12 ns at T = 78 K), post-irradiation rise on a submicrosecond time scale at T?128 K and slow exponential decay at T?160 K. A model has been suggested according to which Ax-luminescence at 425 nm is caused by 11>1S0 electron transition of Tl+ ion. It has been explained that the fast decay and post-irradiated rise components are caused by 3P1>1P1 and 3P0>3P1 electron transitions of Tl<m^>+ ion, respectively. The scintillation process in NaI:Tl has been discussed. |
| 言語: | 英語 |
| 出版事項: |
2016
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| 主題: | |
| オンライン･アクセス: | https://doi.org/10.15407/fm23.04.364 |
| フォーマット: | 電子媒体 図書の章 |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=652774 |
| 要約: | Title screen This paper studies spectral-kinetic properties of NaI:Tl cathodoluminescence registered in the region of Ax-band with maximum 425 nm within the time interval of 10-8-10-2 s. Ax-luminescence of NaI:Tl crystal has been excited with an electron pulse (Ee = 0.25 MeV, t1/2 = 10 ns, W = 0.003...0.16 J/cm2) at temperatures in the range of 65-300 K. It has been found that the cathodoluminescence kinetics of NaI:Tl crystal at 425 nm has beside the exponential decay (? = 235 ns at T = 295 K) also three more components: the fastest exponential decay (? = 12 ns at T = 78 K), post-irradiation rise on a submicrosecond time scale at T?128 K and slow exponential decay at T?160 K. A model has been suggested according to which Ax-luminescence at 425 nm is caused by 11>1S0 electron transition of Tl+ ion. It has been explained that the fast decay and post-irradiated rise components are caused by 3P1>1P1 and 3P0>3P1 electron transitions of Tl<m^>+ ion, respectively. The scintillation process in NaI:Tl has been discussed. |
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| DOI: | 10.15407/fm23.04.364 |