Thallium-doped sulphate potassium crystals as materials for radiation detectors
Luminescence characteristics of potassium sulphate (K₂SO₄) crystals doped with thallium were studied. Crystals were grown from water solution at slightly elevated temperature. The nature and properties of the luminescence centres in these crystals have been determined. The main monovalent thallium l...
Збережено в:
| Дата: | 2013 |
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| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2013
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| Назва видання: | Functional Materials |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120080 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Thallium-doped sulphate potassium crystals as materials for radiation detectors / M. Myrzakhmet, M. Nikl, V. Jary, B. Dalelkhan, A. Zhanabergenov // Functional Materials. — 2013. — Т. 20, № 3. — С. 295-299. — Бібліогр.: 19 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Luminescence characteristics of potassium sulphate (K₂SO₄) crystals doped with thallium were studied. Crystals were grown from water solution at slightly elevated temperature. The nature and properties of the luminescence centres in these crystals have been determined. The main monovalent thallium luminescence centres show the absorption peak at 216 nm and emission one peaking at 285 nm at room temperature. Thallium is substituting potassium which has two different positions in K₂SO₄ structure. Consequently, two different Tl⁺ centers were found for thallium centers in these crystals and the third center includes an unspecified perturbation agent nearby. Tl⁺ centers differ in radiative lifetime at low temperatures and in temperature dependence of decay times measured within 8—300 K. |
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