A Study on the Calibration of a Time-focused Inelastic Neutron Scattering Spectrometer
2000
Abstract The calibration of a time-focused spectrometer for the analysis of inelastically back-scattered neutrons is discussed. By comparison with a reference spectrum, a non linear system of the kinetic equations for neutrons is obtained and the calibration process is outlined. This provides a deeper understanding of the question of expected inaccuracies on the measured spectra. In particular, the effect on theparameters of a possible misassignment of the reference spectrum features is examined in detail. A suitable molecular crystal (2,5 diiodothiophene) is identified as the recommended calibrant. Using different transitions from the spectrum of this calibrant the inaccuracies introduced by misassignment are assessed.
Keywords:
- Neutron time-of-flight scattering
- Nuclear magnetic resonance
- Physics
- Small-angle neutron scattering
- Inelastic scattering
- Neutron reflectometry
- Neutron stimulated emission computed tomography
- Neutron scattering
- Spectrometer
- X-ray Raman scattering
- Optics
- Inelastic neutron scattering
- Neutron backscattering
- Computational physics
- Calibration
- Neutron
- Correction
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