2020/02/11 by Nnaemeka Nnamani, K. van Bibber, Nnamani, Nnaemeka +7
Engineering · Medicine · Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear Theory (nucl-th) #Nuclear reactor physics and engineering #Radiation Therapy and Dosimetry
paper · pdf · doi:10.48550/arxiv.2002.04602
openalex publication_date 2020/02/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Department of Nuclear Engineering, University of California Berkeley\nbuilt a D-D neutron generator called the High Flux Neutron Generator (HFNG). It\noperates in the range of 100-125 keV of accelerating voltage. The generator\nproduces neutron current of about 108 per second. These neutrons have energies\nbetween 2.2-2.8 MeV. We report here the results of a measurement of the\nscattered vs unscattered neutron fluence on polyethylene determined via neutron\nactivation of multiple natural indium foils from a D-D neutron generator. Both\nthe angle-integrated spectrum and the angle differential results are consistent\nwith the predictions of the Monte Carlo N-Particle Transport (MCNP) code, using\nthe ENDF/B-VII.1. This supports shielding calculations in the fast energy\nregion with high density polyethylene (HDPE). To the best of our knowledge no\nintegral benchmark experiment has been performed on polyethylene using\nD(D,n)alpha neutron spectrum.\n