改进BaF2闪烁体光输出特征研究

介绍旨在抑制BaF₂闪烁体慢发光成分，拓展其应用领域的紫外滤光膜系设计和 性能测量结果，研究表明，以Al₂O₃/MgF₂/Al/MgF₂为 基本结构优化设计的紫外滤光膜系对来自BaF₂闪烁体不同角度入射的快/慢成分光分别具有高透射和强截止特性.还提供 了用纳秒级脉冲辐射源激发“BaF₂+紫外滤光膜系+光电闪烁探测器”系统获得的BaF₂闪烁体时间响应曲线，并对紫外滤光膜系中子辐照损伤特性进行了研究. 关键词： 2闪烁体')" href="#">BaF₂闪烁体 紫外线 滤光片 时间响应

Study on modifying the output properties of BaF2 scintilation spectru m

In order to extend the scope of application of BaF₂ scintillators in the diagnosis of the fast-pulse-radiation-field, an ultraviolet-light-filter has been dev eloped for the modification of the scintillation spectrum. The experimental resu lts reveal that the filter, which is composed of Al₂O₃, Mg F₂, and Al, has a very low transmittance to the slow component light emitted by BaF₂ in the in cident angles from 0°to 45° with respect to the surface normal, but has a rela tively high transmittance to the fast component light also emitted by it. The pr operty of the temporal response curve has been obtained by use of a pulse x-rays source, and the damage effect induced by the irradiation of the neutron with an energy of 14.1 MeV is also introduced in this paper.