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  4. A simple electron time-of-flight spectrometer for ultrafast vacuum ultraviolet photoelectron spectroscopy of liquid solutions
 
research article

A simple electron time-of-flight spectrometer for ultrafast vacuum ultraviolet photoelectron spectroscopy of liquid solutions

Arrell, C. A.  
•
Ojeda, J.  
•
Sabbar, M.
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2014
Review of Scientific Instruments

We present a simple electron time of flight spectrometer for time resolved photoelectron spectroscopy of liquid samples using a vacuum ultraviolet (VUV) source produced by high-harmonic generation. The field free spectrometer coupled with the time-preserving monochromator for the VUV at the Artemis facility of the Rutherford Appleton Laboratory achieves an energy resolution of 0.65 eV at 40 eV with a sub 100 fs temporal resolution. A key feature of the design is a differentially pumped drift tube allowing a microliquid jet to be aligned and started at ambient atmosphere while preserving a pressure of 10−1 mbar at the micro channel plate detector. The pumping requirements for photoelectron (PE) spectroscopy in vacuum are presented while the instrument performance is demonstrated with PE spectra of salt solutions in water. The capability of the instrument for time resolved measurements is demonstrated by observing the ultrafast (50 fs) vibrational excitation of water leading to temporary proton transfer.

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Type
research article
DOI
10.1063/1.4899062
Web of Science ID

WOS:000344594200017

Author(s)
Arrell, C. A.  
Ojeda, J.  
Sabbar, M.
Okell, W. A.
Witting, T.
Siegel, T.
Diveki, Z.
Hutchinson, S.
Gallmann, L.
Keller, U.
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Date Issued

2014

Publisher

Amer Inst Physics

Published in
Review of Scientific Instruments
Volume

85

Issue

10

Article Number

103117

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LSU  
Available on Infoscience
October 29, 2014
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/108079
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