Thermal neutron backscattering spectrometer

Because of its high energy resolution and high momentum transfer the backscattering spectrometer IN13 is particularly useful for the microscopic study of single particle motions (jump reorientation, rotational and translational diffusion, tunnelling) observed by incoherent neutron scattering.


IN13 is mainly devoted to life sciences, in particular to the study of the dynamical features of macromolecular compounds in the μeV energy region, but scientific applications can be also found in areas of materials science, solid-state physics, geophysics and chemistry.


  • Membranes and protein dynamics ; Protein/membrane interactions ; Extreme environmental conditions in biosciences and biotechnology ; In-vivo studies

Polymers and saccharides

  • Saccharides and trehalose dynamics ; Main chain and side chain motions in polymers ; Conducting acid-doped polymers ; Rotator phases

Confined media and inclusion compounds


Inside IN13

This photo shows the inside of IN13 as seen from above, i.e. from the hole through which samples and sample-environment devices are installed on the instrument.

  • incident neutron beam
  • sample position
  • small angle analyser made of CaF2(422) cystals
  • large angle analysers made of CaF2(422) cystals
  • a set of 32 3He neutron detectors