Finlay, O. J., Gruse, J. N., Thornton, C. et al. (25 more authors) (2021) Characterisation of a laser plasma betatron source for high resolution x-ray imaging. Plasma Physics and Controlled Fusion. 084010. ISSN 1361-6587
Abstract
We report on the characterisation of an x-ray source, generated by a laser-driven plasma wakefield accelerator. The spectrum of the optimised source was consistent with an on-axis synchrotron spectrum with a critical energy of 13.8+2.2-1.9 keV and the number of photons per pulse generated above 1 keV was calculated to be 6+1.2-0.9× 10\9. The x-ray beam was used to image a resolution grid placed 37 cm from the source, which gave a measured spatial resolution of 4 µm 5 µm. The inferred emission region had a radius and length of 0.5 0.2 µm and 3.2 0.9 mm respectively. It was also observed that laser damage to the exit aperture of the gas cell led to a reduction in the accelerated electron beam charge and a corresponding reduction in x-ray flux due to the change in the plasma density profile.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 The Author(s) |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) The University of York > Faculty of Sciences (York) > Biology (York) |
Depositing User: | Pure (York) |
Date Deposited: | 16 Nov 2021 11:00 |
Last Modified: | 18 Dec 2024 00:20 |
Published Version: | https://doi.org/10.1088/1361-6587/ac0fcf |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1088/1361-6587/ac0fcf |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:180484 |
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