Synchrotron-based ambient pressure X-ray photoelectron spectroscopy of hydrogen and helium

被引：15

作者：

Zhong, Jian-Qiang ^{[1
]}

Wang, Mengen ^{[1
,2
]}

Hoffmann, William H. ^{[3
]}

van Spronsen, Matthijs A. ^{[4
]}

Lu, Deyu ^{[1
]}

Boscoboinik, J. Anibal ^{[1
]}

机构：

[1] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

[2] SUNY Stony Brook, Dept Mat Sci & Chem Engn, Stony Brook, NY 11970 USA

[3] NC State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA

[4] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA

来源：

APPLIED PHYSICS LETTERS | 2018年 / 112卷 / 09期

关键词：

TOTAL-ENERGY CALCULATIONS; PHOTOIONIZATION; ADSORPTION; PT(111); GAS;

D O I：

10.1063/1.5022479

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Contrary to popular belief, it is possible to obtain X-ray photoelectron spectra for elements lighter than lithium, namely hydrogen and helium. The literature is plagued with claims of this impossibility, which holds true for lab-based X-ray sources. However, this limitation is merely technical and is related mostly to the low X-ray photoionization cross-sections of the 1s orbitals of hydrogen and helium. In this letter, we show that, using ambient pressure X-ray photoelectron spectroscopy (XPS), a bright-enough X-ray source allows the study of these elusive elements. This has important implications in the understanding of the limitations of one of the most useful techniques in materials science, and moreover, it potentially opens the possibility of using XPS to directly study the most abundant element in the universe. Published by AIP Publishing.

引用

页数：5

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