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Nano-polycrystalline diamond anvils: key devices for XAS at extreme conditions: their use, scientific impact, present status and future needs
High Pressure Research ( IF 2 ) Pub Date : 2019-12-10 , DOI: 10.1080/08957959.2019.1700978
A. D. Rosa 1 , O. Mathon 1 , R. Torchio 1 , J. Jacobs 1 , S. Pasternak 1 , T. Irifune 2 , S. Pascarelli 1
Affiliation  

ABSTRACT Nano-polycrystalline diamonds (NPDs) have become fundamental tools for cutting-edge X-ray absorption spectroscopy (XAS) studies at high P/T conditions that opened up new research directions by overcoming previous limitations. Indeed, NPDs yield a continuous and weak X-ray background signal which enables the collection of high-quality XAS data of materials compressed in diamond anvil cells. This is a critical advantage over the classically used single-crystal diamonds that generate strong parasitic signals (glitches) which render the analysis of XAS data in many cases impossible. In this contribution we give an overview of the impact and the scientific opportunities that NPDs opened up for extreme condition XAS spectroscopy at the European Synchrotron Radiation Facility and discuss future needs.

中文翻译:

纳米多晶金刚石砧:极端条件下 XAS 的关键设备:它们的用途、科学影响、现状和未来需求

摘要纳米多晶金刚石 (NPD) 已成为在高 P/T 条件下进行尖端 X 射线吸收光谱 (XAS) 研究的基本工具,通过克服以前的局限性开辟了新的研究方向。事实上,NPD 会产生连续且微弱的 X 射线背景信号,从而能够收集在金刚石砧座中压缩的材料的高质量 XAS 数据。与经典使用的单晶金刚石相比,这是一个关键优势,后者会产生强烈的寄生信号(毛刺),从而在许多情况下无法分析 XAS 数据。在这篇文章中,我们概述了 NPD 为欧洲同步加速器辐射设施的极端条件 XAS 光谱带来的影响和科学机会,并讨论了未来的需求。
更新日期:2019-12-10
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