Barlow, D., Goffrey, T., Bennett, K. et al. (11 more authors) (2022) Role of hot electrons in shock ignition constrained by experiment at the National Ignition Facility. Physics of Plasmas. 082704. ISSN 1089-7674
Abstract
Shock ignition is a scheme for direct drive inertial confinement fusion that offers the potential for high gain with the current generation of laser facility; however, the benefits are thought to be dependent on the use of low adiabat implosions without laser-plasma instabilities reducing drive and generating hot electrons. A National Ignition Facility direct drive solid target experiment was used to calibrate a 3D Monte Carlo hot-electron model for 2D radiation-hydrodynamic simulations of a shock ignition implosion. The α = 2.5 adiabat implosion was calculated to suffer a 35% peak areal density decrease when the hot electron population with temperature T h = 55 keV and energy E h = 13 kJ was added to the simulation. Optimizing the pulse shape can recover ∼ 1 / 3 of the peak areal density lost due to a change in shock timing. Despite the harmful impact of laser-plasma instabilities, the simulations indicate shock ignition as a viable method to improve performance and broaden the design space of near ignition high adiabat implosions.
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Copyright, Publisher and Additional Information: | 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 | ||||||
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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 Arts and Humanities (York) > History (York) The University of York > Faculty of Sciences (York) > Chemistry (York) |
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Depositing User: | Pure (York) | ||||||
Date Deposited: | 14 Sep 2022 15:50 | ||||||
Last Modified: | 02 Feb 2024 00:27 | ||||||
Published Version: | https://doi.org/10.1063/5.0097080 | ||||||
Status: | Published | ||||||
Refereed: | Yes | ||||||
Identification Number: | https://doi.org/10.1063/5.0097080 | ||||||
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