Two-dimensional correlation analysis for x-ray photoelectron spectroscopy
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
X-ray photoelectron spectroscopy (XPS) measures the binding energy of core-level electrons, which are well-localised to specific atomic sites in a molecular system, providing valuable information on the local chemical environment. The technique relies on measuring the photoelectron spectrum upon x-ray photoionisation, and the resolution is often limited by the bandwidth of the ionising x-ray pulse. This is particularly problematic for time-resolved XPS, where the desired time resolution enforces a fundamental lower limit on the bandwidth of the x-ray source. In this work, we report a novel correlation analysis which exploits the correlation between the x-ray and photoelectron spectra to improve the resolution of XPS measurements. We show that with this correlation-based spectral-domain ghost imaging method we can achieve sub-bandwidth resolution in XPS measurements. This analysis method enables XPS for sources with large bandwidth or spectral jitter, previously considered unfeasible for XPS measurements.
Date Issued
2021-07-14
Date Acceptance
2020-11-25
Citation
Journal of Physics B: Atomic, Molecular and Optical Physics, 2021, 54 (14), pp.1-9
ISSN
0953-4075
Publisher
IOP Publishing
Start Page
1
End Page
9
Journal / Book Title
Journal of Physics B: Atomic, Molecular and Optical Physics
Volume
54
Issue
14
Copyright Statement
© 2021 The Author(s). Published by IOP Publishing Ltd Printed in the UK. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering and Physical Sciences Research Council
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000684385400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
EP/I032517/1
EP/R019509/1
Subjects
Science & Technology
Physical Sciences
Optics
Physics, Atomic, Molecular & Chemical
Physics
x-ray photoelectron spectroscopy
free-electron laser
ghost imaging
AMO physics
Publication Status
Published
Article Number
ARTN 144005
Date Publish Online
2021-08-12