Soft Report - Dipartimento di Fisica - Sapienza

Development of the neutron backscattering spectrometer IN13IN13 is a backscattering spectrometer working with thermal neutrons with wavelength 2.23 Ǻcorresponding to energy of 16.45 meV (Fig. 1). The tuning of the incident neutron energy is obtainedby adjusting the d-spacing of the monochromator by heating it. The energy resolution is of the orderof 7 µeV and the energy window is ± 150µeV, corresponding to a time scale ranging from 4,5 10 -12 sto 10 -10 s. The instrument fills the energy gap between IN10 or IN16 at ILL and IN5 at ILL, MIBEMOLat the LLB or IRIS at the Rutherford-Appleton laboratory (RAL) in United-Kingdom. In addition thevalue of the incident energy gives the availability of high momentum transfers (Q