The SOF detectors in pulsed neutron measurements
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Date
2009
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Institute of Nuclear Physics Polish Academy of Sciences
Abstract
The time decay of the pulsed thermal neutron flux has been measured with quasi-point SOF detectors (scintillator with the optical fiber). The detectors have been placed at three positions in a 12 cm cube of polyethylene. The time decay constants of the fundamental exponential mode of the thermal neutron flux have been determined and compared with results of a reference measurement using 3He neutron detectors at the cube surface and with a theoretical result from the thermal neutron diffusion theory.
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Sponsorship:
The work has been partly sponsored by the Polish Ministry of Science and Higher Education under research within the Scientific Network “Neutrons–Emission–Detection” [Decision Nos. 620/E-77/SN-0055/07 and 620/E-77/BWSN-0055/2008]