近表面和浅界面的氢探测与共振核反应分析

IF 8.2 1区 化学 Q1 CHEMISTRY, PHYSICAL
Markus Wilde, Katsuyuki Fukutani
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引用次数: 0

摘要

本文介绍了通过共振1H(15N,αγ)12C反应的核反应分析(NRA)氢深度剖面,作为固体表面和界面上高度深度分辨氢(H)的一种通用方法。该技术是定量的,非破坏性的,并且易于应用于各种各样的材料。详细描述了其基本原理、仪器要求、优点和局限性,并将其在深度分辨率和灵敏度方面的主要性能指标与作为竞争方法的弹性后坐力检测(ERD)进行了比较。综述了1H(15N,αγ)12C NRA在表面和界面氢相关现象研究中的广泛应用。特别强调的是1H(15N,αγ)12C NRA与原位靶制备和表征表面科学技术的强大结合,因为NRA技术非常适合研究氢原子与原子控制表面和完整界面的相互作用。结合热解吸光谱,15N NRA可以评估吸收氢在不同深度位置对扩散和解吸的热稳定性。氢在近表面区域的扩散动力学,包括氢在表面和体之间以及纳米结构薄层堆的浅界面之间的转移,可以直接可视化。作为15N NRA的独特之处,多普勒加宽共振激发曲线的分析可以直接测量吸附在单晶表面的氢原子的零点振动能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hydrogen detection near surfaces and shallow interfaces with resonant nuclear reaction analysis

This review introduces hydrogen depth profiling by nuclear reaction analysis (NRA) via the resonant 1H(15N,αγ)12C reaction as a versatile method for the highly depth-resolved observation of hydrogen (H) at solid surfaces and interfaces. The technique is quantitative, non-destructive, and readily applied to a large variety of materials. Its fundamentals, instrumental requirements, advantages and limitations are described in detail, and its main performance benchmarks in terms of depth resolution and sensitivity are compared to those of elastic recoil detection (ERD) as a competing method. The wide range of 1H(15N,αγ)12C NRA applications in research of hydrogen-related phenomena at surfaces and interfaces is reviewed.

Special emphasis is placed on the powerful combination of 1H(15N,αγ)12C NRA with surface science techniques of in-situ target preparation and characterization, as the NRA technique is ideally suited to investigate hydrogen interactions with atomically controlled surfaces and intact interfaces. In conjunction with thermal desorption spectroscopy, 15N NRA can assess the thermal stability of absorbed hydrogen species in different depth locations against diffusion and desorption. Hydrogen diffusion dynamics in the near-surface region, including transitions of hydrogen between the surface and the bulk, and between shallow interfaces of nanostructured thin layer stacks can directly be visualized. As a unique feature of 15N NRA, the analysis of Doppler-broadened resonance excitation curves allows for the direct measurement of the zero-point vibrational energy of hydrogen atoms adsorbed on single crystal surfaces.

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来源期刊
Surface Science Reports
Surface Science Reports 化学-物理:凝聚态物理
CiteScore
15.90
自引率
2.00%
发文量
9
审稿时长
178 days
期刊介绍: Surface Science Reports is a journal that specializes in invited review papers on experimental and theoretical studies in the physics, chemistry, and pioneering applications of surfaces, interfaces, and nanostructures. The topics covered in the journal aim to contribute to a better understanding of the fundamental phenomena that occur on surfaces and interfaces, as well as the application of this knowledge to the development of materials, processes, and devices. In this journal, the term "surfaces" encompasses all interfaces between solids, liquids, polymers, biomaterials, nanostructures, soft matter, gases, and vacuum. Additionally, the journal includes reviews of experimental techniques and methods used to characterize surfaces and surface processes, such as those based on the interactions of photons, electrons, and ions with surfaces.
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