Directionally solidified Eu doped CaF2/Li3AlF6 eutectic scintillator for neutron detection
Directionally solidified Eu doped CaF2/Li3AlF6 eutectic scintillator for neutron detection
复制标题
用于中子检测的定向凝固 Eu 掺杂 CaF2/Li3AlF6 共晶闪烁体
DOI：
10.1016/j.optmat.2015.06.004
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发表时间：
2015
影响因子：
3.9
通讯作者：
A. Yoshikawa
中科院分区：
文献类型：
--
作者：
K. Kamada;Kousuke Hishinuma;S. Kurosawa;Y. Shoji;J. Pejchal;Y. Ohashi;Y. Yokota;A. Yoshikawa
采用μ-PD法生长了Eu掺杂的CaF 2/Li 3AlF 6共晶。制备了直径为600 nm的Eu：CaF 2闪烁体纤维与Li 3AlF 6的定向凝固共晶。生长的共晶在422 nm处有一个发射峰，归属于Eu：CaF 2闪烁光纤的Eu 2 +4f-5d跃迁。Eu：CaF 2-Li 3AlF 6共晶中Li的浓度约为0.038 mol/cm 3，是LiCaAlF 6单晶（0.016 mol/cm 3）的2倍。Eu：CaF_2-Li_3AlF_6共晶的光产额约为7000 ph/中子。衰减时间约为550 ns（89%）和1450 ns（11%）。
Eu doped CaF2/Li3AlF6eutectics were grown by μ-PD method. The directionally solidified eutectic with well-aligned 600 nm diameter Eu:CaF2scintillator fibers surrounded with Li3AlF6was prepared. The grown eutectics showed an emission peak at 422 nm ascribed to Eu2+4f–5d transition from Eu:CaF2scintillation fiber. Li concentration in the Eu:CaF2–Li3AlF6eutectic is around 0.038 mol/cm3,which is two times higher than that of LiCaAlF6single crystal (0.016 mol/cm3). The light yield of Eu:CaF2–Li3AlF6eutectic was around 7000 ph/neutron. The decay time was about 550 ns (89%) and 1450 ns (11%).