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@TECHREPORT{Hahn:811323,
      author       = {Hahn, H. and Ludwig, W.},
      title        = {Über den {E}influß der {A}nharmonizität auf die
                      thermische {R}öntgenstreuung an {K}ristallen},
      volume       = {0005},
      number       = {Juel-0005-RW},
      address      = {Jülich},
      publisher    = {Kernforschungsanlage Jülich Zentralbibliothek, Verlag},
      reportid     = {FZJ-2016-03811, Juel-0005-RW},
      series       = {Berichte der Kernforschungsanlage Jülich},
      pages        = {19 p.},
      year         = {1960},
      abstract     = {The effect of vibrational anharmonicity on the thermal
                      scattering of X-rays from crystals is calculated for
                      temperatures above the Debye temperature. A revised method
                      of interpreting the experimental data is suggested. The
                      (temperature dependent) dispersion curves (frequency vs.
                      wave-vector) for small wave-vectors are determined by the
                      isothermal rather than the adiabatic elastic constants. A
                      procedure is outlined to extrapolate from the (temperature
                      dependent) scattering data the (temperature independent)
                      dispersion curves which correspond to the harmonic
                      approximation.},
      cin          = {PRE-2000},
      cid          = {I:(DE-Juel1)PRE2000-20140101},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)29},
      url          = {https://juser.fz-juelich.de/record/811323},
}