Optimizing the Moderator Geometry and Thickness for a Reactor-Based Slow Positron Source
Monte Carlo radiation transport simulations were used to calculate the slow positron yields from tungsten foil positron moderators at a reactor-based slow positron source. The slow positron generation rates were coupled to a simple electrostatic extraction model to estimate the yield of extractable slow positrons from the source. These calculations were used to optimize the foil thicknesses, length, pitch, and extraction voltages.
R. Alsulami et al., "Optimizing the Moderator Geometry and Thickness for a Reactor-Based Slow Positron Source," Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 497, pp. 39-46, Elsevier, Jun 2021.
The definitive version is available at https://doi.org/10.1016/j.nimb.2021.04.005
Nuclear Engineering and Radiation Science
Keywords and Phrases
Nuclear Reactor; Positron Moderator; Slow Positrons; Tungsten
International Standard Serial Number (ISSN)
Article - Journal
© 2021 Elsevier, All rights reserved.
15 Jun 2021