Monte Carlo Simulations of Resolution Functions and Scan Profiles for Neutron Three-Axis Spectrometers

Article type: Research Article

Authors: Šaroun, J.^; | Kulda, J.

Affiliations: Nuclear Physics Institute, 25068 Řež near Prague, Czech Republic | Institut Laue-Langevin, BP 156,38042 Grenoble Cedex, France

Note: [] Corresponding author. Fax: 042-2-6857003. E-mail: saroun@ujf.cas.cz

Abstract: The method of ray-tracing simulation of the resolution functions for neutron scattering experiments is described. The corresponding algorithm has been implemented in a resolution calculation program for conventional three-axis spectrometers and combined with an efficient Monte Carlo convolution algorithm to simulate the phonon scans. Used in data fitting procedures, this method permits adequate instrumental corrections to be made including second order effects, and thus to improve significantly the accuracy of experiments. The measurement of LO phonons in diamond is given as an example.

Keywords: Monte Carlo simulations, resolution function, triple-axis spectrometers, phonons

DOI: 10.1080/10238169708200102

Journal: Journal of Neutron Research, vol. 6, no. 1-3, pp. 125-133, 1997