Monte Carlo simulation of instrument response for direct geometry time-of-flight spectrometers

D. R. Bungert; David G. Narehood; Matthew M. Tibbits; Paul E. Sokol

doi:10.1117/12.578805

21 October 2004 Monte Carlo simulation of instrument response for direct geometry time-of-flight spectrometers

D. R. Bungert, David G. Narehood, Matthew M. Tibbits, Paul E. Sokol

Proceedings Volume 5536, Advances in Computational Methods for X-Ray and Neutron Optics; (2004) https://doi.org/10.1117/12.578805
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

A full Monte Carlo simulation of sample scattering and the final flight path for direct geometry time-of-flight spectrometers has been developed. This allows the scattering from systems with both realistic and complex scattering geometries as well as realistic scattering functions to be modeled. This simulation, PULSCAT, interfaces with commonly available ray tracing programs, such as VITESS, that simulate the incident beam. Spectra with elastic and inelastic features resulting from scattering from isotropic scattering systems in addition to multiple scattering for amorphous scattering systems can be modeled with PULSCAT. The sample geometry used in the simulation is entered through a GUI interface. Due to the large flexibility in the input parameters for the sample, sample environment equipment can be included in the simulations allowing for scattering from ancillary equipment (such as from a standard orange cryostat) to be modeled. This makes PULSCAT a powerful tool for simulating systems and investigating spurious effects present in collected spectra.

Citation Download Citation

D. R. Bungert, David G. Narehood, Matthew M. Tibbits, and Paul E. Sokol "Monte Carlo simulation of instrument response for direct geometry time-of-flight spectrometers", Proc. SPIE 5536, Advances in Computational Methods for X-Ray and Neutron Optics, (21 October 2004); https://doi.org/10.1117/12.578805

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KEYWORDS

Scattering

Monte Carlo methods

Laser scattering

Human-machine interfaces

Computer simulations

Spectrometers

Computer aided design

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