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放松时间测量:关联衍射模式

Katsuaki Nakazawa¹, Kazutaka Mitsuishi¹

¹International Center for Young Scientists (ICYS), National Institute for Materials Science, Sengen 1-2-1, Ibaraki, Japan.

Microscopy (Oxford, England)

|October 21, 2025

概括

与一次性方法相比,两次相关函数为液体和玻璃提供了较长的动态测量. 这种先进的技术还显示出最小的剂量依赖性,提高了其研究材料动态的可靠性.

科学领域:

凝聚物质物理学凝聚物质物理学
材料科学是一种材料科学.
软物质物理学软物质物理学

背景情况:

射线光子相关谱 (XPCS) 和电子相关显微镜是研究液体和玻璃动态的关键技术.
这些方法依赖于分析衍射模式的时间变化.
目前对于评估这些动态的一次性和两次性相关函数的理解有限.

研究的目的:

调查和比较一次和两次相关函数的特征.
确定每种分析液体和玻璃动态的方法的优点.

主要方法:

使用X射线光子相关谱 (XPCS) 和电子相关显微镜.
测量了衍射模式的时间变化.
计算和比较一次和两次相关函数.

主要成果:

与一次性相关函数相比,两次相关函数可以在较长的时间内测量动态.
两次相关函数表明对应用于辐射剂量的敏感性较低.

结论:

两次相关函数是一种更强大的方法,用于探测液体和玻璃中长时间范围的动态.
它的微弱剂量依赖性提高了它在各种实验环境中的适用性.

关键词:

在4D-STEM中,这是一个5D-STEM.衍射的差异化方式动态的异质性动态的异质性玻璃玻璃玻璃玻璃玻璃放松时间放松时间

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