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April 15-16, 2019 | Frankfurt, Germany
Applied Physics & Laser, Optics and Photonics
International Conference on
Materials Science and Nanotechnology | Volume: 3
New technical concepts for velocity map imaging in a THz streak camera
Mamuna Anwar
University of Hamburg, Germany
I
n this presentation the development of a novel
type of streak-camera enabling multi-dimensional
electron spectroscopy implying energy, angular
as well as time resolution is reported. The new
setup is based on a Velocity Map Imaging (VMI)
spectrometer in collinear geometry for electron
spectroscopy and Terahertz streaking adding
time resolution to the setup. A highly efficient
detection scheme being operational at comparably
bad vacuum conditions allows for highest target
densities up to 3 x 1022/m3 making the setup
particularly suited for low photon flux laboratory
sources. The detection efficiency is explicitly
calculated. In the proof of principle experiment
xenon photoelectrons are streaked and the ionizing
and streaking pulses are characterized.
e
:
mamuna.anwar@desy.de