Luminescent probes for some radioactive waste confinement phosphates

• Дата: 2004
• Автори: Chukova, O.V., Boyko, R.S., Gaididei, G.I., Nagornyi, P.G., Nedilko, S.G., Nedyelko, I.M., Radzivanov, V.I., Sakun, V.P., Boyko, V.V.
• Формат: Стаття
• Мова: English
• Опубліковано: НТК «Інститут монокристалів» НАН України 2004
• Назва видання: Functional Materials
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/135255
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Luminescent probes for some radioactive waste confinement phosphates / O.V. Chukova, R.S. Boyko, G.I. Gaididei, P.G. Nagornyi, S.G. Nedilko, I.M. Nedyelko, V.I. Radzivanov, V.P. Sakun, V.V. Boyko // Functional Materials. — 2004. — Т. 11, № 1. — С. 147-152. — Бібліогр.: 10 назв. — англ.

Phosphate compounds are used for long time storage of many radioactive substances waste. For the first time the single crystals and glasses NaTi2(PO4) compounds doped with rare-earth elements such as neodymium, samarium, dysprosium, praseodymium as well as indium ions have been obtained. Luminescence properties of the single crystals were investigated at 4.2, 77, and 300 K temperatures. It was shown that the luminescence spectra are superposition of the wide band of the proper "red" luminescence band of the NaTi2(PO4)3 matrix emission and linear spectra caused by intrinsic transitions in /-shells of the impurity rare-earth ions. The "red" luminescence is considered as a result of emission of Ti3+ ions spontaneously formed in the NaTi2(PO4)3 matrix. Analysis of the fine structure of the spectra shows that indium, samarium, and dysprosium impurities are arranged into the NaTi2(PO4)3 matrix as the ln3+, Sm3+ and Dy3+ ions.