Bradford, P., Woolsey, N. C. orcid.org/0000-0002-2444-9027, Scott, G. G. et al. (25 more authors) (2018) EMP control and characterization on high-power laser systems. High Power Laser Science and Engineering. e21. ISSN 2052-3289
Abstract
Giant electromagnetic pulses (EMP) generated during the interaction of high-power lasers with solid targets can seriously degrade electrical measurements and equipment. EMP emission is caused by the acceleration of hot electrons inside the target, which produce radiation across a wide band from DC to terahertz frequencies. Improved understanding and control of EMP is vital as we enter a new era of high repetition rate, high intensity lasers (e.g. the Extreme Light Infrastructure). We present recent data from the VULCAN laser facility that demonstrates how EMP can be readily and effectively reduced. Characterization of the EMP was achieved using B-dot and D-dot probes that took measurements for a range of different target and laser parameters. We demonstrate that target stalk geometry, material composition, geodesic path length and foil surface area can all play a significant role in the reduction of EMP. A combination of electromagnetic wave and 3D particle-in-cell simulations is used to inform our conclusions about the effects of stalk geometry on EMP, providing an opportunity for comparison with existing charge separation models.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © The Author(s) 2018 |
Keywords: | Fabrication,High energy density physics,High-power laser related laser components,Laser plasmas interaction,Target design |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) The University of York > Faculty of Arts and Humanities (York) > Archaeology (York) The University of York > Faculty of Sciences (York) > Biology (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York) The University of York > Faculty of Social Sciences (York) > The York Management School The University of York > Faculty of Arts and Humanities (York) > English and Related Literature (York) The University of York > Faculty of Sciences (York) > Chemistry (York) The University of York > Faculty of Sciences (York) > Computer Science (York) |
Depositing User: | Pure (York) |
Date Deposited: | 24 Jan 2020 16:30 |
Last Modified: | 12 Jan 2025 00:07 |
Published Version: | https://doi.org/10.1017/hpl.2018.21 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1017/hpl.2018.21 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:156059 |
Download
Filename: emp_control_and_characterization_on_highpower_laser_systems.pdf
Description: emp_control_and_characterization_on_highpower_laser_systems
Licence: CC-BY 2.5