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Information × Registration Number 0304U004154, 0103U004210 , R & D reports Title Elaboration of cargo inspection and hidden heavy and breakdown materials presence detection policy popup.stage_title Підготовка елементів методики контролю і виявлення важких і подільних матеріалів Head Rudychev V.G., Registration Date 25-03-2004 Organization Kharkov National University named after V.N.Karazin popup.description2 The subject of research is the method of detecting the forbidden enclosure which connected with transportation of weapon, ammunition and fission materials. The most important problem that arised last years is detecting of 235U and 239Pu isotopes in connection with the threat of nuclear terrorizm and control of non-proliferation of nuclear weapons. The aim is the development of sensitive methods of cargo inspection, which are transported inside a large container, including the revelation of high-Z and fission materials on the background of some disguising factors. Method of investigation is computer simulation of attenuation of bremsstrahlung beam when passes through a model and experimental study of related tasks. The bremsstrahlung beam from 6 MeV linac is used. An opportunity of detecting different materials with the same thickness is created due to a special shaping of bremsstrahlung spectrum. For detecting of presence of fission materials the simultaneously method is working out for the excitation of induced fission under a prompt neutron pulse (10-20ns). During this stage a model was developed of the system for speed driving of injected current of diode source, which works at neutron generator composition. The method is developed for optimum filter calculation, which can shape a given spectrum of bremsstrahlung from linac. The nuclear data base is completed (gamma-ray attenuation) for the set of materials which can occur inside cargo container and for some model materials prepared for experiment. Product Description popup.authors popup.nrat_date 2020-04-02 Close