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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:
-
- 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)
- 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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