Numerical Simulation of High-Speed Non-equilibrium Flow with Applied Magnetic Field

Ryakhovskiy, A.I.; Schmidt, A. A.; Antonov, Valery

doi:10.15514/ispras-2017-29(6)-19

Proceedings of ISP RAS

2017

DOI: 10.15514/ispras-2017-29(6)-19

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Numerical Simulation of High-Speed Non-equilibrium Flow with Applied Magnetic Field

A.I. Ryakhovskiy¹,

A. A. Schmidt²,

Valery Antonov³

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2024

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Formation of Extended Tubular Plasma in Argon at Low Pressure and in a Weak Longitudinal Magnetic Field

Akishev,

Bakhtin,

Buleyko

et al. 2024

Plasma Phys. Rep.

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The results of experimental studies on the formation and subsequent evolution of extended (l = 300 mm) and thin-walled (Δr ≈ 10 mm) tubular (2r ≈ 110 mm) plasma in a weak longitudinal magnetic field (B = 175 G) without the use of a thermionic cathode are presented. The cylindrical chamber in which the tubular plasma was formed was pumped with high purity argon (99.998%) at an average velocity of about 1 m/s at a pressure of P = 10–3–10–2 Torr. Two methods of creating seed electrons initiating the development of ionization avalanches were used. The difference inherent to these methods has been established in the dynamics of breakdown, completing in the formation of a tubular discharge. In the first of them, a pulsed discharge preceding the high voltage supply of the main discharge created gas preionization in a small area around the sectioned cathodes. In the second method, seed electrons were created in the entire working area of the discharge chamber by an RF discharge with a frequency of 85 kHz and duration of about 1 s. High-speed shooting with a 4-frame ICCD camera allowed us to establish the dynamics of tubular discharge formation at all its stages. Measurements of the longitudinal and radial discharge current were carried out. The results we obtained showed the possibility of spatial isolation of an extended tubular plasma from the close located metal wall of the discharge chamber by using a weak longitudinal magnetic field.

show abstract

Formation of Extended Tubular Plasma in Argon at Low Pressure and in a Weak Longitudinal Magnetic Field

Akishev,

Bakhtin,

Buleyko

et al. 2024

Plasma Phys. Rep.

View full text Add to dashboard Cite

show abstract

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Numerical Simulation of High-Speed Non-equilibrium Flow with Applied Magnetic Field

Cited by 1 publication

References 1 publication

Formation of Extended Tubular Plasma in Argon at Low Pressure and in a Weak Longitudinal Magnetic Field

Formation of Extended Tubular Plasma in Argon at Low Pressure and in a Weak Longitudinal Magnetic Field

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