Speckle-tracking imaging has the advantages of simple setup and high-sensitivity to slowly varying phase gradients. Subset size choice is regarded as a trade-off problem for speckle-tracking X-ray imaging where one needs to balance the spatial resolution
Besides the research reactor and the spallation neutron sources, a variety of low energy accelerators, in which the charged particles are accelerated to decades of MeV, are used to deliver neutrons. The accelerated charged particles could be hadrons, such as the proton, deuteron, or other heavier...