Plasma ion stratification by weak planar shocks

Simakov, Andrei N.; Keenan, Brett D.; Taitano, William T.; Chacón, Luis

doi:10.1063/1.4995427

Title: Plasma ion stratification by weak planar shocks

Journal Article · Tue Aug 01 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4995427· OSTI ID:1402645

^[1]; Keenan, Brett D. ^[1]; Taitano, William T. ^[1]; Chacón, Luis ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

We derive fluid equations for describing steady-state planar shocks of a moderate strength (0 < M - 1 ≲ 1 with M the shock Mach number) propagating through an unmagnetized quasineutral collisional plasma comprising two separate ion species. In addition to the standard fluid shock quantities, such as the total mass density, mass-flow velocity, and electron and average ion temperatures, the equations describe shock stratification in terms of variations in the relative concentrations and temperatures of the two ion species along the shock propagation direction. We have solved these equations analytically for weak shocks (0 < M - 1 << 1), with the results depending on M, ratios of the ion masses and charges, and the upstream mass fraction of one of the ion species. These analytical results are instrumental for gaining understanding in the behavior of weak shocks, and they have been used to verify kinetic simulations of shocks in multi-ion plasmas.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1402645

Alternate ID(s):: OSTI ID: 1375540

Report Number(s):: LA-UR-17-25524; TRN: US1703242

Journal Information:: Physics of Plasmas, Vol. 24, Issue 9; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 10 works

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Measurements of ion velocity separation and ionization in multi-species plasma shocks Rinderknecht, Hans G.; Park, H. -S.; Ross, J. S. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5023383	journal	May 2018
Yield degradation in inertial-confinement-fusion implosions due to shock-driven kinetic fuel-species stratification and viscous heating Taitano, W. T.; Simakov, A. N.; Chacón, L. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5024402	journal	May 2018
Multi-species plasma transport in 1D direct-drive ICF simulations Vold, E.; Rauenzahn, R.; Simakov, A. N. Physics of Plasmas, Vol. 26, Issue 3 https://doi.org/10.1063/1.5083157	journal	March 2019
Kinetic physics in ICF: present understanding and future directions Rinderknecht, Hans G.; Amendt, P. A.; Wilks, S. C. Plasma Physics and Controlled Fusion, Vol. 60, Issue 6 https://doi.org/10.1088/1361-6587/aab79f	journal	April 2018
Deciphering the Kinetic Structure of Multi-Ion Plasma Shocks Keenan, Brett D.; Simakov, Andrei N.; Chacon, Luis arXiv https://doi.org/10.48550/arxiv.1707.02927	text	January 2017
Ion Species Stratification Within Strong Shocks in Two-Ion Plasmas Keenan, Brett D.; Simakov, Andrei N.; Taitano, William T. arXiv https://doi.org/10.48550/arxiv.1712.08663	text	January 2017

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