Ce^3＋激活Li6-Al-Si玻璃闪烁体发光与核物理性能研究

Luminescence and Nuclear Physics Properties of Ce^3＋-doped Li^6-Al-Si Glass Scintillator

合成了几种Ce^3＋与Li^6靶核核素共掺的Li—Al—Si系统玻璃闪烁体（简称LAS），系统研究了其稳态发光、瞬态发光及其主要核物理性能。研究结果表明：该玻璃闪烁体具有较长的发射波长、适中的Stokes位移、较短的衰减时间以及较高的中子探测效率，是中子探测优良的闪烁发光材料。利用Li^6和Li^7闪烁玻璃对中子和γ射线的响应特性，可实现中子和γ射线的甄别。

Several nuclear targets radionuclide and Ce^3＋ doped Li-Al-Si system glass scintillator are prepared in this paper, steady-state and transient-state luminescence and major nuclear physics properties are studied in detail. The results show that the glass scintillator is a kind of good neutron detection scintillating material which have longer emission wavelength, moderate stokes displacement ,shorter decay time and higher neutron detection efficiency. Using the response characteristics of Li^6 and Li^7 scintillating glass to neutron and γ-ray, the discrimination of neutron and γ-ray could be achieved.