Comparison of Monte Carlo simulations with neutron imaging experiments
What is it about?
Neutron scattering affects neutron imaging experiments in many ways which are often difficult to understand and quantify their impact. Through monte carlo simulations we have performed a quantitative comparison of the effect of these scattering effects over the measured intensity and the attenuation coefficient of poly-crystalline samples.
Why is it important?
It is an important step for the development of physical models that help us understand neutron imaging experiments better, particularly for poly-crystalline materials. With this model one can calculate what is the added value to the transmitted intensity from neutrons scattered from the sample, and provides with a tool to compute more accurately attenuation coefficients for highly coherent powder-like samples. Since the scattering effect is well described in the model, it is an ideal tool to design instrumentation related to this effect, like collimators.