Time-resolved Ax-luminescence of NaI:Tl under electron pulse irradiation
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Time-resolved Ax-luminescence of NaI:Tl under electron pulse irradiation
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| Creator |
Yakovlev, V.
Trefilova, L. Alekseev, V. Krasnov, V. |
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| Subject |
Characterization and properties
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| Description |
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 (τ = 235 ns at T = 295 K) also three more components: the fastest exponential decay (τ = 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+ ion, respectively. The scintillation process in NaI:Tl has been discussed.
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| Date |
2017-06-14T14:55:45Z
2017-06-14T14:55:45Z 2016 |
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| Type |
Article
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| Identifier |
Time-resolved Ax-luminescence of NaI:Tl under electron pulse irradiation / V. Yakovlev, L. Trefilova, V. Alekseev, V. Krasnov // Functional Materials. — 2016. — Т. 23, № 4. — С. 540-545. — Бібліогр.: 26 назв. — англ.
1027-5495 DOI: doi.org/10.15407/fm23.04.540 http://dspace.nbuv.gov.ua/handle/123456789/121515 |
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| Language |
en
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| Relation |
Functional Materials
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| Publisher |
НТК «Інститут монокристалів» НАН України
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