Kardjilov, N.; de Beer, F.; Hassanein, R.; Lehmann, E.; Vontobel, P.: Scattering corrections in neutron radiography using point scattered functions. Nuclear Instruments & Methods in Physics Research A 542 (2005), p. 336-341
10.1016/j.nima.2005.01.159
Abstract:
Scattered neutrons cause distortions and blurring in neutron radiography pictures taken at small distances between the investigated object and the detector. This defines one of the most significant problems in the quantitative neutron radiography. The quantification of strong scattering materials such as hydrogenous materials ¿ water, oil, plastic and etc. with a high precision is very difficult due to the scattering build-up effect in the radiography images. The scattering contribution in liquid test samples (H2O, D2O and a special type oil ISOPAR L) at different distances between the samples and the detector, the so-called Point Scattered Function (PScF) was calculated with the help of MCNP-4C Monte Carlo code. Corrections of real experimental data were performed using the calculated PScF. Some of the results as well as the correction algorithm will be presented