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Title: Mitigation of deceleration-phase Rayleigh–Taylor instability growth in inertial confinement fusion implosions

Abstract

Rayleigh–Taylor growth during shell deceleration is one of the main limiting factors for target performance in inertial confinement fusion implosions. Here, using analytical scaling laws and hydrodynamic simulations, we show that such amplification can be mitigated by reducing the initial mass density in the central target region. The perturbation growth reduction is caused by a smaller hot-spot convergence ratio during deceleration, increased density scale length, and enhanced ablation stabilization. The required central density reduction can be achieved using the dynamic shell formation concept.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]
  1. Univ. of Chicago, IL (United States); Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA); USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
2008028
Grant/Contract Number:  
NA0003856; FOA-0002212; AR0001272; SC0017951
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 30; Journal Issue: 9; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; computer simulation; shock waves; fluid mechanics; flow instabilities; hydrodynamics simulations

Citation Formats

Lawrence, Yousef, Goncharov, Valeri, Woo, Ka Ming, Trickey, William, and Igumenshchev, Igor. Mitigation of deceleration-phase Rayleigh–Taylor instability growth in inertial confinement fusion implosions. United States: N. p., 2023. Web. doi:10.1063/5.0164835.
Lawrence, Yousef, Goncharov, Valeri, Woo, Ka Ming, Trickey, William, & Igumenshchev, Igor. Mitigation of deceleration-phase Rayleigh–Taylor instability growth in inertial confinement fusion implosions. United States. https://doi.org/10.1063/5.0164835
Lawrence, Yousef, Goncharov, Valeri, Woo, Ka Ming, Trickey, William, and Igumenshchev, Igor. Tue . "Mitigation of deceleration-phase Rayleigh–Taylor instability growth in inertial confinement fusion implosions". United States. https://doi.org/10.1063/5.0164835.
@article{osti_2008028,
title = {Mitigation of deceleration-phase Rayleigh–Taylor instability growth in inertial confinement fusion implosions},
author = {Lawrence, Yousef and Goncharov, Valeri and Woo, Ka Ming and Trickey, William and Igumenshchev, Igor},
abstractNote = {Rayleigh–Taylor growth during shell deceleration is one of the main limiting factors for target performance in inertial confinement fusion implosions. Here, using analytical scaling laws and hydrodynamic simulations, we show that such amplification can be mitigated by reducing the initial mass density in the central target region. The perturbation growth reduction is caused by a smaller hot-spot convergence ratio during deceleration, increased density scale length, and enhanced ablation stabilization. The required central density reduction can be achieved using the dynamic shell formation concept.},
doi = {10.1063/5.0164835},
journal = {Physics of Plasmas},
number = 9,
volume = 30,
place = {United States},
year = {Tue Sep 19 00:00:00 EDT 2023},
month = {Tue Sep 19 00:00:00 EDT 2023}
}

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