Volume 85, Number 4, February 2009
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||04 March 2009|
Mach cones in a three-dimensional complex plasma
Max-Planck-Institut für extraterrestrische Physik - D-85741 Garching, Germany, EU
2 Joint Institute for High Temperatures, RAS - Izhorskaya Street, 13/19, Moscow, 125412 Russia
3 RSC “Energia” Korolev - 141070 Moscow Region, Russia
Corresponding author: email@example.com
Accepted: 2 February 2009
A three-dimensional hydrodynamic model has been applied to study the Mach cones in a three-dimensional complex plasma. Numerical results for the velocity distribution of dust particles showed the presence of compressional-wave Mach cones. The compressional Mach cones were excited when subjected to supersonic excitations. It was found that multi-cone structures became a single cone when the discharge pressure was increased. The experiment of Mach cones in a three-dimensional complex plasma under microgravity conditions on board the International Space Station was also reported. A single compressional-wave Mach cone in a three-dimensional complex plasma was observed and could also be obtained from our hydrodynamic model.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.35.Fp – Electrostatic waves and oscillations (e.g., ion-acoustic waves) / 47.40.-x – Compressible flows; shock waves
© EPLA, 2009
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