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@TECHREPORT{Herrmann:850769,
      author       = {Herrmann, V.},
      title        = {{P}roton-{P}roton- und {N}eutron-{P}roton-{B}remsstrahlung
                      im {P}otentialmodell},
      volume       = {2840},
      number       = {Juel-2840},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2018-04543, Juel-2840},
      series       = {Berichte des Forschungszentrums Jülich},
      pages        = {144 p.},
      year         = {1993},
      abstract     = {The nucleon-nucleon(NN) bremsstrahlung reaction is studied
                      in the framework of a potential model. We investigate and
                      explain the behavior of the most important corrections to
                      the purely non-relativistic model considering only the
                      external current; i. e. we include the relativistic spin
                      correction, the one-body rescattering contribution and the
                      Coulomb-effect, where it is needed. The important
                      contribution of the two-body or meson-exchange current is
                      treated in the soft-photon-approximation. In addition to the
                      usual coplanar NN$_{\gamma}$ cross section we also study
                      non-coplanar cross sections and spin observables like the
                      analyzing power and spin correlation coefficients. It is
                      shown that the behavior of the relativistic spin correction
                      is governed by the $^{1}$S$_{0}$ partial-wave state, is
                      almost energy independent and reduces the NN$_{\gamma}$
                      cross section by roughly 20 - 30\%. The one-body
                      rescattering contribution enhances the pp$\gamma$ cross
                      section for the geometry of the last TRIUMF experiment by
                      about 20\% and thus almost compensates the effect of the
                      relativistic spin corrections. The effects of each part of
                      the NN interaction on the pp$\gamma$ observables is studied
                      in the coplanar geometry. We find that these effects depend
                      on the proton scatteringangles as well as on the considered
                      observable. However, the tensor component of the NN
                      interaction is important in all geometries. The comparison
                      of different NN potential models yields that the
                      NN$_{\gamma}$ reaction is not able to discriminate these
                      potentials in their off-shell behavior, although the
                      corresponding T-matrices deviate from each other off the
                      energy shell. It is concluded that the occuring differences
                      originate already from deviations on the energy shell or
                      from the fact that the approximations made in the
                      calculations for the two-body current are not of the same
                      quality for all NN potential models.},
      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/850769},
}