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@ARTICLE{Ibach:1008197,
      author       = {Ibach, Harald and Tautz, F. Stefan and Bocquet, François
                      C.},
      title        = {{A} novel high-current, high-resolution, low-kinetic-energy
                      electron source for inverse photoemission spectroscopy},
      journal      = {Review of scientific instruments},
      volume       = {94},
      number       = {4},
      issn         = {0034-6748},
      address      = {[Erscheinungsort nicht ermittelbar]},
      publisher    = {American Institute of Physics},
      reportid     = {FZJ-2023-02243},
      pages        = {043908},
      year         = {2023},
      abstract     = {A high-current electron source for inverse photoemission
                      spectroscopy is described. The source comprises a thermal
                      cathode electron emission system, an electrostatic
                      deflector-monochromator, and a lens system for variable
                      kinetic energy (1.6–20 eV) at the target. When scaled to
                      the energy resolution, the electron current is an order of
                      magnitude higher than that of previously described electron
                      sources developed in the context of electron energy loss
                      spectroscopy. Surprisingly, the experimentally measured
                      energy resolution turned out to be significantly better than
                      calculated by standard programs, which include the
                      electron–electron repulsion in the continuum
                      approximation. The achieved currents are also significantly
                      higher than predicted. We attribute this “inverse
                      Boersch-effect” to a mechanism of velocity selection in
                      the forward direction by binary electron–electron
                      collisions.},
      cin          = {PGI-3},
      ddc          = {620},
      cid          = {I:(DE-Juel1)PGI-3-20110106},
      pnm          = {5213 - Quantum Nanoscience (POF4-521) / DFG project
                      396769409 - Grundlagen der Photoemissionstomographie},
      pid          = {G:(DE-HGF)POF4-5213 / G:(GEPRIS)396769409},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000978948200002},
      doi          = {10.1063/5.0138512},
      url          = {https://juser.fz-juelich.de/record/1008197},
}