Regimes of the Vishniac–Ryu Decelerating Shock Instability
Abstract
Here we revisit the derivation of the instability of dense shocked layers, originally developed by Vishniac and Ryu. Our motivation is that density profiles found in actual astrophysical and laboratory systems often do not match the assumptions in that paper. In order to identify the anticipated theoretical growth rates for various circumstances, one must first revisit the derivation and allow for the possibility that the density scale length differs, in magnitude and/or in sign, from the isothermal scale height. This analysis leads us to find regimes of purely convective instability and also of Vishniac stabilization of this instability, in addition to some new regimes of Vishniac behavior. We also identify a typographical error in the original paper that matters for quantitative evaluation of growth rates.
- Authors:
-
- Univ. of Michigan, Ann Arbor, MI (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1484645
- Alternate Identifier(s):
- OSTI ID: 1486978
- Report Number(s):
- LA-UR-18-24184
Journal ID: ISSN 1538-4357
- Grant/Contract Number:
- 89233218CNA000001; NA0002956; NA0001944; AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 868; Journal Issue: 1; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; hydrodynamics; instabilities; supernovae: general; turbulence; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Drake, R. Paul, and Doss, Forrest William. Regimes of the Vishniac–Ryu Decelerating Shock Instability. United States: N. p., 2018.
Web. doi:10.3847/1538-4357/aae47d.
Drake, R. Paul, & Doss, Forrest William. Regimes of the Vishniac–Ryu Decelerating Shock Instability. United States. https://doi.org/10.3847/1538-4357/aae47d
Drake, R. Paul, and Doss, Forrest William. Wed .
"Regimes of the Vishniac–Ryu Decelerating Shock Instability". United States. https://doi.org/10.3847/1538-4357/aae47d. https://www.osti.gov/servlets/purl/1484645.
@article{osti_1484645,
title = {Regimes of the Vishniac–Ryu Decelerating Shock Instability},
author = {Drake, R. Paul and Doss, Forrest William},
abstractNote = {Here we revisit the derivation of the instability of dense shocked layers, originally developed by Vishniac and Ryu. Our motivation is that density profiles found in actual astrophysical and laboratory systems often do not match the assumptions in that paper. In order to identify the anticipated theoretical growth rates for various circumstances, one must first revisit the derivation and allow for the possibility that the density scale length differs, in magnitude and/or in sign, from the isothermal scale height. This analysis leads us to find regimes of purely convective instability and also of Vishniac stabilization of this instability, in addition to some new regimes of Vishniac behavior. We also identify a typographical error in the original paper that matters for quantitative evaluation of growth rates.},
doi = {10.3847/1538-4357/aae47d},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 868,
place = {United States},
year = {Wed Nov 14 00:00:00 EST 2018},
month = {Wed Nov 14 00:00:00 EST 2018}
}
Web of Science
Figures / Tables:
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Works referencing / citing this record:
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