Selwood, M. P., Underwood, C. I.D., Heathcote, R. et al. (1 more author) (2020) Coded apertures with scatter and partial attenuation for high-energy high-resolution imaging. Plasma Physics and Controlled Fusion. 074002. ISSN 1361-6587
Abstract
Laser-plasma x-ray sources have garnered interest from various communities due to their ability to generate high photon-energies from a small source size. The passive imaging of high energy x-rays and neutrons is also a useful diagnostic in laser-driven fusion capsules as well as laboratory astrophysics experiments which aim to study small samples of transient electron-positron plasmas. Here we study a coded aperture with scatter and partial attenuation included, which we call a 'CASPA', and compare them to the more common method of pinhole imaging. As well as discussing the well-known increased throughput of coded apertures, we also show that the decoding algorithm relaxes the need for a thick substrate. We simulate a 511 keV x-ray source through ray-tracing and Geant4 simulations to show how incomplete attenuation of the source by the mask may be less detrimental to imaging using a CASPA than to using a standard pinhole system.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Author(s). Published by IOP Publishing Ltd |
Keywords: | CASPA,coded aperture,high-resolution,laser-plasma sources,neutron imaging,x-ray imaging |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 17 Jul 2020 16:20 |
Last Modified: | 25 Dec 2024 00:22 |
Published Version: | https://doi.org/10.1088/1361-6587/ab8ca4 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1088/1361-6587/ab8ca4 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163434 |
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