A New Energy and Angle Resolving Electron Spectrometer – First Results

Publication

Author: G Öhrwall, P Karlsson, M Wirde, M Lundqvist, P Andersson, D Ceolin, B Wannberg, T Kachel, H Dürr, W Eberhardt, S Svensson Elsevier Logo  | © Elsevier B.V. Journal of Electron Spectroscopy and Related Phenomena
URL: https://doi.org/10.1016/j.elspec.2010.09.009
Date: 2011
Instruments: ARTOF-2

A new energy and angle resolved analyzer for photoelectron spectroscopy is described. This analyzer is based on combining an advanced focusing electron lens system with time-of-flight measurements. A position sensitive detector gives time and position for the electron events. From this information the kinetic energy and start direction are obtained through a transformation procedure, giving both a large luminosity and a very high energy resolution. The instrument analyses the angles of emission of the electrons in a cone with 30° opening angle and simulations show that extremely high energy and angular resolution can be achieved simultaneously. We report the first results from this instrument, obtained at the PM-3 beam line at BESSY (Berlin, Germany). This analyzer opens up new possibilities for angular resolved electron spectroscopy, band-mapping and other applications.