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

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.5022479· OSTI ID:1430858
 [1];  [2];  [3];  [4];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN); Stony Brook Univ., NY (United States). Dept. of Materials Science and Chemical Engineering
  3. North Carolina State Univ., Raleigh, NC (United States). Dept. of Chemical and Biomolecular Engineering
  4. Harvard Univ., Cambridge, MA (United States). Dept. of Chemistry and Chemical Biology
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. Here, 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.
Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division; USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS) (SC-27)
Grant/Contract Number:
AC02-05CH11231; SC0012573; SC0012704
OSTI ID:
1430858
Alternate ID(s):
OSTI ID: 1423385
Report Number(s):
BNL--203379-2018-JAAM
Journal Information:
Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 9 Vol. 112; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

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