Optimizing the Moderator Geometry and Thickness for a Reactor-Based Slow Positron Source

Author

Raed Alsulami
Mubarak Albarqi
Safwan Jaradat
Shoaib Usman, Missouri University of Science and TechnologyFollow
Joseph T. Graham, Missouri University of Science and TechnologyFollow

Abstract

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.

Recommended Citation

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

Department(s)

Nuclear Engineering and Radiation Science

Keywords and Phrases

Nuclear Reactor; Positron Moderator; Slow Positrons; Tungsten

International Standard Serial Number (ISSN)

0168-583X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2021 Elsevier, All rights reserved.

Publication Date

15 Jun 2021