Eu-doped SrAl12O19, SrAl4O7, Sr4Al14O25 and SrAl2O4 bulk crystals were successfully synthesized by the floating zone method. The samples exhibit photoluminescence and scintillation with an intense broad emission due to the 5d-4f transitions of Eu2+ in the visible range, and Eu:SrAl12O19 shows additional several sharp emissions owing to Eu3+. The Eu2+ emission blue-shifts as the Al-ratio increases. Pulse height spectrum measurements under 137Cs γ-ray irradiation demonstrated a clear photoabsorption peak, in which the scintillation light yields were estimated to be 6,900 (Eu:SrAl12O19), 700 (Eu:SrAl4O7), 6,500 (Eu:Sr4Al14O25) and 42,000 (Eu:SrAl2O4) photons/MeV.
|Number of pages||5|
|Journal||Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms|
|Publication status||Published - 2018 Nov 15|
- Single crystal
- Strontium aluminate
ASJC Scopus subject areas
- Nuclear and High Energy Physics