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Growth and spectroscopy of BaBrI crystals activated by Eu2+ ionsстатья
- Авторы: Rusakov A.I., Shalaev A.A., Shendrik R.Y., Myasnikova A.S., Subanakov A.K.
- Журнал: AIP Conference Proceedings
- Том: 2069
- Год издания: 2019
- DOI: 10.1063/1.5089830
- Аннотация: BaBrI crystals containing 0.01 to 8 mol. % of Eu2+ activator have been obtained. The photo- and X-ray luminescence spectra correspond to Eu2+ 5d - 4f characteristic transitions with a maximum at about 3 eV. The scintillation decay time is 400-500 ns (fast component) and 3700-5500 ns (slow component). It has been established that the decay time in BaBrI crystals depends on the activator concentration. In the absorption spectra of BaBrI: Eu2+ crystals, a double peak is observed associated with 4f7 - 4f65d1 transitions in Eu2+. On the edge of optical absorption, the band gap of 5.2 eV was estimated. We assume the resonant mechanism of energy transfer to the luminescence centers. © 2019 Author(s).
- Добавил в систему: Шендрик Роман Юрьевич