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@ARTICLE{Neumayer:10045,
      author       = {Neumayer, P. and Aurand, B. and Basko, M. and Ecker, B. and
                      Gibbon, P. and Hochhaus, D.C. and Karmakar, A. and Kazakov,
                      E. and Kühl, T. and Labaune, C. and Rosmej, O. and
                      Tauschwitz, A. and Zielbauer, B. and Zimmer, D.},
      title        = {{T}he role of hot electron refluxing in laser-generated
                      {K}-alpha sources},
      journal      = {Physics of plasmas},
      volume       = {17},
      issn         = {1070-664X},
      address      = {[S.l.]},
      publisher    = {American Institute of Physics},
      reportid     = {PreJuSER-10045},
      pages        = {103103},
      year         = {2010},
      note         = {We would like to thank the PHELIX laser and operations team
                      for their support, as well as the GSI target laboratory for
                      target preparation. This work was supported in part by
                      Laserlab Europe and by the ExtreMe Matter Institute EMMI in
                      the framework of the Helmholtz Alliance HA216/EMMI.},
      abstract     = {A study of the contribution of refluxing electrons in the
                      production of K-alpha radiation from high-intensity laser
                      irradiated thin targets has been performed. Thin copper
                      foils both freestanding, and backed by a thick substrate
                      were irradiated with laser pulses of energies around 100 J
                      at intensities ranging from below 10(17) to above 10(19)
                      W/cm(2). At high laser intensities we find a strong
                      reduction in the K-alpha yield from targets backed by the
                      substrate. The observed yield reduction is in good agreement
                      with a simple model using hot electron spectra from
                      particle-in-cell simulations or directly inferred from the
                      measured bremsstrahlung emission and can therefore be
                      interpreted as due to the suppression of hot electron
                      refluxing. The study shows that refluxing electrons play a
                      dominant role in high-intensity laser driven K-alpha
                      generation and have to be taken into account in designing
                      targets for laser driven high-flux K-alpha sources. (C) 2010
                      American Institute of Physics. [doi: 10.1063/1.3486520]},
      keywords     = {J (WoSType)},
      cin          = {JSC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JSC-20090406},
      pnm          = {Scientific Computing (FUEK411) / 411 - Computational
                      Science and Mathematical Methods (POF2-411)},
      pid          = {G:(DE-Juel1)FUEK411 / G:(DE-HGF)POF2-411},
      shelfmark    = {Physics, Fluids $\&$ Plasmas},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000283772200057},
      doi          = {10.1063/1.3486520},
      url          = {https://juser.fz-juelich.de/record/10045},
}