ROBERTO MAURO SCHOUERI
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Artigo IPEN-doc 23100 Method to evaluate the L/D ratio of neutron imaging beams2017 - PUGLIESI, R.; PEREIRA, M.A.S.; SCHOUERI, R.M.An alternative simple method to evaluate the L/D ratio of neutron imaging beams is proposed. It is based on the behavior of the ratio “x/Ut”, which asymptotically tends to L/D for large values of the parameter “x”, that corresponds to the distance separating a gadolinium test object to the scintillator plane, where its image is formed. The method was applied to the neutron imaging equipment of the Nuclear and Energy Research Institute IPENCNEN/ SP and the obtained result was L/D = (104 ± 4). The consistency of the proposed method was verified by comparing this value with those ones obtained by a well - known and established procedure.