A simple electron time-of-flight spectrometer for ultrafast vacuum ultraviolet photoelectron spectroscopy of liquid solutions
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
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.
Date Issued
2014-10-01
Date Acceptance
2014-10-10
Citation
Review of Scientific Instruments, 2014, 85 (10)
ISSN
1089-7623
Publisher
American Institute of Physics (AIP)
Journal / Book Title
Review of Scientific Instruments
Volume
85
Issue
10
Copyright Statement
Copyright © 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Rev. Sci. Instrum. 85, 103117 (2014) and may be found at https://dx.doi.org/10.1063/1.4899062
Subjects
Science & Technology
Technology
Physical Sciences
Instruments & Instrumentation
Physics, Applied
Physics
DYNAMICS
EVAPORATION
MICROJETS
CHARGE
WATER
Publication Status
Published
Article Number
ARTN 103117