In the context of the ClearMind project, we measured the scintillating properties, as induced from gamma ray interactions, of today available PbWO₄ crystal. We measured scintillation's yields and time constants by measuring the signal shape measured on a fast photo-multiplier and deconvoluting it from the instrumental effects. For the doped crystals at room temperature, we measured a fast scintillation component, with time constants of 2 ns, 55 % of the total light yield, and a slow component of 6 ns. We observe a significant increase of the light yield for the slow component when the temperature decreases and simultaneous increase of the time constants, but no increase in the fast component light yield. Our measurements reproduce the main qualitative features of PbWO₄ crystals quoted in the literature. Quantitatively though, we measured significantly shorter time constants and larger light yields. This is explained by a rigorous treatment of the instrumental contributions in the measurements. Results are discussed and prospect for future developments “tailored” for the ClearMind project are presented.

在 ClearMind 项目的背景下，我们测量了当今可用的 PbWO ₄晶体由伽马射线相互作用引起的闪烁特性。我们通过测量在快速光电倍增器上测量的信号形状并将其从仪器效应中解卷积来测量闪烁的产量和时间常数。对于室温下的掺杂晶体，我们测量了快速闪烁分量，时间常数为 2 ns，总光产额的 55%，以及 6 ns 的慢速分量。我们观察到当温度降低和时间常数同时增加时慢组件的光输出显着增加，但快速组件的光输出没有增加。我们的测量再现了 PbWO ₄的主要定性特征文献中引用的晶体。但是，从数量上讲，我们测量了明显更短的时间常数和更大的光产额。这是通过对测量中仪器贡献的严格处理来解释的。讨论了结果，并介绍了为 ClearMind 项目“量身定制”的未来发展前景。