Interaction of a supersonic particle with a three-dimensional complex plasma

@article{Zaehringer2018InteractionOA,
  title={Interaction of a supersonic particle with a three-dimensional complex plasma},
  author={Erich Zaehringer and Mierk Schwabe and Sergey K. Zhdanov and Daniel P. Mohr and Christina A. Knapek and Peter Huber and I L Semenov and Hubertus M. Thomas},
  journal={arXiv: Plasma Physics},
  year={2018}
}
The influence of a supersonic projectile on a three-dimensional complex plasma is studied. Micron sized particles in a low-temperature plasma formed a large undisturbed system in the new 'Zyflex' chamber during microgravity conditions. A supersonic probe particle excited a Mach cone with Mach number M $\approx$ 1.5 - 2 and double Mach cone structure in the large weakly damped particle cloud. The speed of sound is measured with different methods and particle charge estimations are compared to… 

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References

SHOWING 1-10 OF 48 REFERENCES
Mach cones in a three-dimensional complex plasma
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
Direct measurement of the speed of sound in a complex plasma under microgravity conditions
We present a direct measurement of the speed of sound in a three-dimensional complex plasma —a room-temperature plasma that contains micrometer-sized particles as fourth component. In order to obtain
Supersonic Particle in a Low Damped Complex Plasma under Microgravity
We discuss the diagnostics of a complex plasma cloud recorded in experiments performed in the framework of the Ekoplasma project. A supersonic extra particle is used as a probe of the cloud dynamics.
Cavity dynamics and particle alignment in the wake of a supersonic projectile penetrating a dusty plasma.
TLDR
The penetration of a projectile into a strongly coupled dusty plasma was studied in a radio-frequency discharge under microgravity conditions and the dynamics can be subdivided into three phases: An opening phase with fixed time scale, a closing phase whose duration is affected by the projectile speed and a phase of particle realignment in the target cloud, which persists for a long time after the closure of the cavity.
Mach cone shocks in a two-dimensional Yukawa solid using a complex plasma
  • Samsonov, Goree, Thomas, Morfill
  • Physics
    Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
  • 2000
TLDR
Over the limited range of speed V attained by the supersonic particles in this experiment, the angle mu of the cone was found to obey the Mach cone rule sin mu = c/V, where c is the medium's sound speed.
Measurement of the speed of sound by observation of the Mach cones in a complex plasma under microgravity conditions
We report the first observation of the Mach cones excited by a larger microparticle (projectile) moving through a cloud of smaller microparticles (dust) in a complex plasma with neon as a buffer gas
Theoretical study of laser-excited Mach cones in dusty plasmas.
TLDR
A two-dimensional hydrodynamic model for a monolayer of dust particles is used to study the Mach cones excited by a moving laser beam through dusty plasmas and it is found that the compressional Mach cones exist in cases of both supersonic and subsonic excitations.
Wake-Mediated Propulsion of an Upstream Particle in Two-Dimensional Plasma Crystals.
TLDR
It is shown that the nonreciprocity of the particle interaction, owing to the wake charges, is responsible for a broken symmetry of the channel that enables a persistent self-propelled motion of the extra particle.
Laser-excited mach cones in a dusty plasma crystal
TLDR
Experimental studies of the formation and structure of Mach cones in a plasma crystal are presented, using a monolayer of particles interacting through a Yukawa potential, and two methods of determining the particle charge and screening distance are developed.
Observation of shear-wave Mach cones in a 2D dusty-plasma crystal.
TLDR
Mach cones composed of shear waves were observed experimentally in a two-dimensional screened-Coulomb crystal and had a single-cone structure, which is explained by the almost dispersionless character ofShear waves.
...
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