@article{MartenssonFoehlischSvensson2022,
  author    = {Martensson, Nils and F{\"o}hlisch, Alexander and Svensson, Svante},
  title     = {Uppsala and Berkeley},
  series = {Journal of vacuum science \& technology : JVST ; an AVS journal / A},
  volume    = {40},
  journal   = {Journal of vacuum science \& technology : JVST ; an AVS journal / A},
  number    = {4},
  publisher = {American Institute of Physics},
  address   = {New York},
  issn      = {0734-2101},
  doi       = {10.1116/6.0001879},
  pages     = {11},
  year      = {2022},
  abstract  = {The development of modern photoelectron spectroscopy is reviewed with a special focus on the importance of research at Uppsala University and at Berkeley. The influence of two pioneers, Kai Siegbahn and Dave Shirley, is underlined. Early interaction between the two centers helped to kick-start the field. Both laboratories have continued to play an important role in the field, both in terms of creating new experimental capabilities and developing the theoretical understanding of the spectroscopic processes.},
  language  = {en}
}
@article{KuehnSorgenfreiGiangrisostomietal.2018,
  author    = {K{\"u}hn, Danilo and Sorgenfrei, Florian and Giangrisostomi, Erika and Jay, Raphael and Musazay, Abdurrahman and Ovsyannikov, Ruslan and Strahlman, Christian and Svensson, Svante and M{\aa}rtensson, Nils and F{\"o}hlisch, Alexander},
  title     = {Capabilities of angle resolved time of flight electron spectroscopy with the 60 degrees wide angle acceptance lens},
  series = {Journal of electron spectroscopy and related phenomena : the international journal on theoretical and experimental aspects of electron spectroscopy},
  volume    = {224},
  journal   = {Journal of electron spectroscopy and related phenomena : the international journal on theoretical and experimental aspects of electron spectroscopy},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0368-2048},
  doi       = {10.1016/j.elspec.2017.06.008},
  pages     = {45 -- 50},
  year      = {2018},
  abstract  = {The simultaneous detection of energy, momentum and temporal information in electron spectroscopy is the key aspect to enhance the detection efficiency in order to broaden the range of scientific applications. Employing a novel 60 degrees wide angle acceptance lens system, based on an additional accelerating electron optical element, leads to a significant enhancement in transmission over the previously employed 30 degrees electron lenses. Due to the performance gain, optimized capabilities for time resolved electron spectroscopy and other high transmission applications with pulsed ionizing radiation have been obtained. The energy resolution and transmission have been determined experimentally utilizing BESSY II as a photon source. Four different and complementary lens modes have been characterized. (C) 2017 The Authors. Published by Elsevier B.V.},
  language  = {en}
}