Minenna, Damien F.G., Poyé, Alexandre, Bradford, Philip et al. (2 more authors) (2020) Electromagnetic pulse emission from target holders during short-pulse laser interactions. Physics of Plasmas. 063102. ISSN 1089-7674
Abstract
For the first time, a global model of electromagnetic pulse (EMP) emission connects charge separation in the laser target to quantitative measurements of the electromagnetic field. We present a frequency-domain dipole antenna model which predicts the quantity of charge accumulated in a laser target as well as the EMP amplitude and frequency. The model is validated against measurements from several high-intensity laser facilities, providing insight into target physics and informing the design of next-generation ultra-intense laser facilities. EMP amplitude is proportional to the total charge accumulated on the target, but we demonstrate that it is not directly affected by target charging time (and therefore the laser pulse duration), provided the charging time is shorter than the antenna characteristic time. We propose two independent methods for estimating the charging time based on the laser pulse duration. We also investigate the impact of target holder geometry on EMPs using cylindrical, conical, and helical holders.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2020 AIP Publishing.This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number EPSRC EP/L000644/1 |
Depositing User: | Pure (York) |
Date Deposited: | 29 Jul 2020 14:30 |
Last Modified: | 24 Dec 2024 00:12 |
Published Version: | https://doi.org/10.1063/5.0006666 |
Status: | Published online |
Refereed: | Yes |
Identification Number: | 10.1063/5.0006666 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:163886 |