A neutron scintillator based on transparent nanocrystalline CaF2: Eu glass ceramic

作者：Struebing Christian; Chong JooYun; Lee Gyuhyon; Zavala Martin; Erickson Anna; Ding Yong; Wang Cai Lin; Diawara Yacouba; Engels Ralf; Wagner Brent; Kang Zhitao^*

来源：Applied Physics Letters, 2016, 108(15): 153106.

DOI：10.1063/1.4945999

There are no efficient Eu2+ doped glass neutron scintillators reported due to low doping concentrations of Eu2+ and the amorphous nature of the glass matrix. In this work, an efficient CaF2: Eu glass ceramic neutron scintillator was prepared by forming CaF2: Eu nanocrystals in a 6 Li-containing glass matrix. Through appropriate thermal treatments, the scintillation light yield of the transparent glass ceramic was increased by a factor of at least 46 compared to the as-cast amorphous glass. This improvement was attributed to more efficient energy transfer from the CaF2 crystals to the Eu2+ emitting centers. Further light yield improvement is expected if the refractive index of the glass matrix can be matched to the CaF2 crystal. Published by AIP Publishing.

• 出版日期2016-4-11