掺杂BaF2晶体闪烁性能的研究

在 BaF₂晶体中掺人 LaF₃,CeF₂,NaF 结晶出 BaF₂(La),BaF₂(Ce),BaF₂(Na)晶体,经测试,其中 BaF₂(La)晶体闪烁发光快成分的强度比纯 BaF₂晶体不减弱,而发光慢成分被抑制3倍,耐辐照能力可以达10⁶rad,表明新晶体有希望满足未来高能物理实验的要求。同时我们对 BaF₂晶体自身的损伤机制和闪烁机制进行了深入研究。

Investigation of the Scintillation Properties of Doped BaF2 Crystal

Doped BaF₂ crystals have been grown with LaF₃,CeF₂,NaF doped in BaF₂ and the scintillation properties of the new crystal have been investigated before and after a r irradiation of ⁶⁰Co source.The radiation resistance of the doped crystal can be up to a dose of 10⁶ rad.Comparing with a pure BaF₂ scintillator,it was found that the fast component of the BaF₂(La)scintillator was almost no change but its slow component was suppressed to a factor of 3.Furthermore,the scintillation mechanisms and damage mechanisms in BaF₂ are discussed.