Evaluation of reconstruction methods for time-resolved spectroscopy of short-pulsed neutron sources
作者： Ion Tiseanu , Teddy Craciunescu
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摘要: A comparison of five methods for the reconstruction time-resolved neutron energy spectrum short-pulsed sources from time-of-flight measurements is reported. The first method an analog Monte Carlo technique (AMCRT), expressly designed optimization such measurements. It was proved that studied problem can be treated as a tomographic one with limited data set. Fourier convolution and backprojection three other methods, which have been shown to work set, are used: maximum entropy method, algebraic technique, implementation (MCBP) technique. Through numerical tests, quality reconstructions in different image geometries at various noise levels has studied. Besides AMCRT produces best results, good also obtained using MCBP entropy. If computing time must minimized, algorithm most convenient. This could used routinely spectroscopy
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