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@INPROCEEDINGS{Schrader:972034,
      author       = {Schrader, Tobias Erich},
      title        = {{D}esign considerations of {UV}-visible {M}icrospectroscopy
                      at single crystal neutron diffractometers},
      reportid     = {FZJ-2023-01043},
      year         = {2022},
      abstract     = {Single crystal neutron diffraction experiments on protein
                      crystals often require beamtimes of several days in order to
                      measure a complete data set which leads to meaningful
                      results on atom positions and occupancies. In case of room
                      temperature measurements, the sample under investigation
                      might change during that time. If one wants to study a
                      radical intermediate state of the protein, often linked to a
                      distinct UV-visible absorption of the crystal, one is often
                      interested in the decay of the number of radicals in the
                      crystal. Below a certain number, one would rather switch to
                      another freshly prepared crystal. This would save precious
                      neutron beamtime. At synchrotron beamlines, UV-Visible
                      microspectroscopy of the crystals mounted on the goniometer
                      is readily available. The purpose of this set-up is to
                      measure the UV-visible spectrum on an oriented crystal on
                      the beamline without the need to take it off the beamline
                      goniometer. This has the advantage that the crystal
                      orientation relative to the light beam and polarization is
                      known. Furthermore, a crystal unmounting step can be avoided
                      for just measuring its UV-visible spectrum. At neutron
                      instruments, such microspectroscopy set-ups are usually not
                      found. But this set-up could also be used to detect whether
                      a ligand is present in a crystal, when the ligand has some
                      optical absorption fingerprint. In this contribution I will
                      discuss some design considerations of such a set-up.},
      month         = {Dec},
      date          = {2022-12-08},
      organization  = {MLZ usermeeting 2022, München
                       (Germany), 8 Dec 2022 - 9 Dec 2022},
      subtyp        = {After Call},
      cin          = {JCNS-FRM-II / MLZ / JCNS-1 / JCNS-4},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-4-20201012},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)BIODIFF-20140101},
      typ          = {PUB:(DE-HGF)24},
      url          = {https://juser.fz-juelich.de/record/972034},
}