Conceptual designing of neutron radiography system in order reorganization of effective parameters in image quality and optimization of them for nuclear and industrial laboratory applications in Afghanistan by using mont-carlo calculation cod-MCNPX
Dr. Dawod Mirzaee, Rajab-Ali Khavari, Ali Safaee
Destroying of diffracted neutrons component or separating of them from passed neutrons through the sample is one of the most important factors in resolution and quality of images in neutron radiography. Neutrons diffraction will create distortion and darkness at images. We introduce an algorithm in order to correction of neutron diffraction in radio graphical images. For this reason, we use Mont-carol code MNCPXwhich have specific ability to calculation neutron space distribution on detector screen. Since, component distribution of neutron diffraction influenced by different factors such as type of material, thickness of them and distance of sample from the detector, we simulated a sample of water with different thickness and distance from detector screen and applied a correction algorithm of distribution function of neutron diffraction on total neutron distribution on the detector screen. The obtained result shows that image clarity and resolution of them will significantly improve by application of diffraction function distribution depend on sample thickness and sample distance from detector. We will try to use this photography method at nuclear physics laboratory of physics faculty of Kabul University, and to find a way to apply them in airport station control section and land border control section and etc.