2020
DOI: 10.1063/1.5139239
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Observation of shock-front separation in multi-ion-species collisional plasma shocks

Abstract: We observe shock-front separation and species-dependent shock widths in multi-ion-species collisional plasma shocks, which are produced by obliquely merging plasma jets of a He/Ar mixture (97% He and 3% Ar by initial number density) on the Plasma Liner Experiment [S. C. Hsu et al., IEEE Trans. Plasma Sci. 46, 1951]. Visible plasma emission near the He-I 587.6-nm and Ar-II 476.5-514.5-nm lines are simultaneously recorded by splitting a single visible image of the shock into two different fast-framing cameras w… Show more

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Cited by 7 publications
(12 citation statements)
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“…Laboratory studies show how ion separation in unmagnetized multicomponent plasma is a common occurrence [24][25][26][27][28]. As examples, Byvank et al [24] use merging plasma jets at oblique angles to observe ion and shock-front separation when using jets that contain a mixture of He and Ar. Rinderknecht et al [28] observe ion velocity separation in a laser-driven collisional shock generated in a multicomponent plasma, and ion-species separation is predicted in inertial confinement fusion experiments as a strong shock enters the fuel containing multiple-ion species [26,27].…”
Section: Introductionmentioning
confidence: 99%
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“…Laboratory studies show how ion separation in unmagnetized multicomponent plasma is a common occurrence [24][25][26][27][28]. As examples, Byvank et al [24] use merging plasma jets at oblique angles to observe ion and shock-front separation when using jets that contain a mixture of He and Ar. Rinderknecht et al [28] observe ion velocity separation in a laser-driven collisional shock generated in a multicomponent plasma, and ion-species separation is predicted in inertial confinement fusion experiments as a strong shock enters the fuel containing multiple-ion species [26,27].…”
Section: Introductionmentioning
confidence: 99%
“…Numerical simulations by Schaeffer et al [23] demonstrate the formation of two collisionless shocks as a laser-ablated plasma acts as a piston pushes on a magnetized multicomponent CH plasma. Laboratory studies show how ion separation in unmagnetized multicomponent plasma is a common occurrence [24][25][26][27][28]. As examples, Byvank et al [24] use merging plasma jets at oblique angles to observe ion and shock-front separation when using jets that contain a mixture of He and Ar.…”
Section: Introductionmentioning
confidence: 99%
“…In addition, kinetic effects occurring in plasma shocks usually cannot be fully described using hydrodynamic shock theory and standard equation-of-state (EOS) models [9][10][11][12]. When multiple ion species are present in a collisional plasma shock, additional features can be introduced to the shock front structure, one of which is interspecies ion separation [13][14][15][16]. These effects have been studied in the context of inertial confinement fusion (ICF) experiments, in which mixtures of deuterium and tritium (DT) are compressed by strong shock waves to achieve fusion reactions.…”
mentioning
confidence: 99%
“…Keenan et al employed an ion-kinetic code to study collisional planar shocks in two-ion plasmas [20]. Comparatively few experiments have been performed that have been able to study the structure inside a collisional multi-ion-species plasma shock [16,[21][22][23][24].…”
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confidence: 99%
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