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Title: Design and performance of a magnetic bottle electron spectrometer for high-energy photoelectron spectroscopy

Journal Article · · Review of Scientific Instruments
DOI: https://doi.org/10.1063/5.0223334 · OSTI ID:3003099
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  1. Kansas State University, Manhattan, KS (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
  2. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Stanford University, CA (United States)
  3. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
  4. University of Connecticut, Storrs, CT (United States)
  5. Kansas State University, Manhattan, KS (United States)

We describe the design and performance of a magnetic bottle electron spectrometer (MBES) for high-energy electron spectroscopy. Our design features a 2 m long electron drift tube and electrostatic retardation lens, achieving sub-electronvolt (eV) electron kinetic energy resolution for high energy (several hundred eV) electrons with a close to 4π collection solid angle. A segmented anode electron detector enables the simultaneous collection of photoelectron spectra in high resolution and high collection efficiency modes. This versatile instrument is installed at the time-resolved molecular and optical sciences instrument at the Linac Coherent Light Source x-ray free-electron laser (XFEL). In this paper, we demonstrate its high resolution, collection efficiency, and spatial selectivity in measurements where it is coupled to an XFEL source. These combined characteristics are designed to enable high-resolution time-resolved measurements using x-ray photoelectron, absorption, and Auger–Meitner spectroscopy. We also describe the pervasive artifact in MBES time-of-flight spectra that arises from a periodic modulation in electron collection efficiency and present a robust analysis procedure for its removal.

Research Organization:
Kansas State University, Manhattan, KS (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); USDOE Office of Science (SC), Office of Workforce Development for Teachers & Scientists (WDTS)
Grant/Contract Number:
AC02-76SF00515; FG02-86ER13491; SC0012376; SC0014664
OSTI ID:
3003099
Journal Information:
Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 12 Vol. 95; ISSN 1089-7623; ISSN 0034-6748
Publisher:
AIP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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