Contamination from the next higher incident energy in inelastic neutron scattering measurements with multiple incident energies on chopper spectrometers

摘要

A highly efficient measurement technique utilizing multiple incident energies (E_jS) simultaneously on a neutron chopper spectrometer has recently become popular in inelastic neutron scattering studies of condensed matter. However, the inelastic scattering spectrum of a target incident energy can be contaminated by the scattering process of other E_is. In this study, we quantitatively evaluated the extent to which the spectrum of a target E_i in this type of measurement can be contaminated by the scattering process of the next higher E_i. We estimated the relative intensity of the scattering from the next higher E_i, for the neutron chopper spectrometers 4SEAS0NS and AMATERAS at the Japan Proton Accelerator Research Complex (J-PARC).