Abstract Time and cost effective methods are highly desirable in research and development of new scintillators. Modern techniques like micro-pulling down (μ-PD) are suitable for material screening but are unfit for the growth of some crystals. These crystals must be grown by different methods that are usually very time demanding. Modification of halide μ-PD apparatus by custom made elements allowed us to grow cesium hafnium chloride (Cs2HfCl6) by vertical Bridgman method (VB) with significantly reduced growth time. Structural and optical properties of samples prepared from as-grown crystals were studied and compared to crystals grown by standard VB method. The X-ray diffraction confirmed the formation of cesium hafnium chloride single-phase and natural cleavage of the crystals along the (1 1 1) crystallographic plane. Photoluminescence emission, excitation, absorption, and radioluminescence spectroscopy revealed that the optical quality of the crystals grown by modified VB method was comparable to the quality of the crystals grown by standard VB method. Therefore we can use samples prepared by modified VB to estimate and optimize the performance of Cs2HfCl6 based crystals in scintillation detectors. This setup allows the time and cost-effective material screening and it is a powerful tool for the development of new halide based single crystal scintillators.

中文翻译：

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改进的垂直布里奇曼方法：制备 Cs2HfCl6 单晶的时间和成本效益工具

摘要 在新型闪烁体的研究和开发中，非常需要时间和成本有效的方法。微下拉 (μ-PD) 等现代技术适用于材料筛选，但不适用于某些晶体的生长。这些晶体必须通过不同的方法生长，这些方法通常非常耗时。通过定制元件对卤化物 μ-PD 装置的修改使我们能够通过垂直布里奇曼方法 (VB) 生长氯化铪铯 (Cs2HfCl6)，并显着缩短生长时间。研究了由生长晶体制备的样品的结构和光学特性，并与通过标准 VB 方法生长的晶体进行了比较。X 射线衍射证实了单相氯化铪铯的形成和晶体沿 (1 1 1) 晶面的自然解理。光致发光，激发、吸收和辐射发光光谱表明，通过改进的 VB 方法生长的晶体的光学质量与通过标准 VB 方法生长的晶体的质量相当。因此，我们可以使用由改进的 VB 制备的样品来估计和优化基于 Cs2HfCl6 的晶体在闪烁探测器中的性能。这种设置允许进行时间和成本效益的材料筛选，它是开发新的基于卤化物的单晶闪烁体的强大工具。因此，我们可以使用由改进的 VB 制备的样品来估计和优化基于 Cs2HfCl6 的晶体在闪烁探测器中的性能。这种设置允许进行时间和成本效益的材料筛选，它是开发新的基于卤化物的单晶闪烁体的有力工具。因此，我们可以使用由改进的 VB 制备的样品来估计和优化基于 Cs2HfCl6 的晶体在闪烁探测器中的性能。这种设置允许进行时间和成本效益的材料筛选，它是开发新的基于卤化物的单晶闪烁体的强大工具。