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Published on: April 28, 2022
Unfolding of 239Pu-Be and 252Cf neutron energy spectra using passive multi-layer neutron spectrometer
Maciej Maciak1,2, Szymon Domański1, Piotr Tulik1
1National Centre for Nuclear Research, Nuclear Facilities Operations Department, Radiological Metrology and Biomedical Physics Division, 7 Andrzeja Sołtana Street, 05-400 Otwock, Poland.
Abstract:
In the study, the passive multi-layer neutron spectrometer, based on thermoluminescence detectors, was tested in a calibration laboratory with 239Pu-Be and 252Cf isotopic sources. MCNP code was used for the calculation of the response functions for the neutron energy range from 1 meV to 100 MeV. It was also utilised for initial guess spectra calculations. Deconvolution was performed with MAXED and GRAVEL deconvolution codes resulting in the neutron spectra defined at the measuring point in the calibration laboratory.
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