Stanko Štefan T, Schawe Jürgen E K, Spieckermann Florian, Eckert Jürgen, Löffler Jörg F
Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland.
Mettler-Toledo GmbH, Analytical, 8606 Nänikon, Switzerland.
J Phys Chem Lett. 2024 Jun 20;15(24):6286-6291. doi: 10.1021/acs.jpclett.4c00497. Epub 2024 Jun 7.
In this study, we combine fast differential scanning calorimetry (FDSC) with synchrotron X-ray measurements to study simultaneously the structure and thermophysical properties of materials. Using the example of the organic compound BCH-52, we show that the X-ray beam can heat the sample and induce a shift of the heat-flow signal. The aim of this paper is to investigate the influence of radiation on sample behavior. The calorimetric data is used to quantify the absorbed beam energy and, together with the diffraction data, reveal an irreversible damage of the sample. The results are especially important for materials with high absorption coefficients and for high-energy X-ray and electron beams. Our findings illustrate that FDSC combined with X-ray diffraction is a suitable characterization method when beam damage must be minimized.
在本研究中，我们将快速差示扫描量热法（FDSC）与同步加速器X射线测量相结合，以同时研究材料的结构和热物理性质。以有机化合物BCH-52为例，我们表明X射线束可以加热样品并引起热流信号的偏移。本文的目的是研究辐射对样品行为的影响。量热数据用于量化吸收的束能量，并与衍射数据一起揭示样品的不可逆损伤。这些结果对于具有高吸收系数的材料以及高能X射线和电子束尤为重要。我们的研究结果表明，当必须将束损伤降至最低时，FDSC与X射线衍射相结合是一种合适的表征方法。
