TITLE

Dynamics of dust-free cavities behind fast projectiles in a dusty plasma under microgravity conditions

AUTHOR(S)
Caliebe, D.; Arp, O.; Piel, A.
PUB. DATE
July 2011
SOURCE
Physics of Plasmas;Jul2011, Vol. 18 Issue 7, p073702
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The penetration of a dusty plasma by fast charged projectiles is studied under microgravity conditions. The mass and charge of the projectiles are larger than those of the target particles. A projectile generates a dust-free cavity in its wake, whose shape strongly depends on the projectile velocity. The faster the projectile the more elongated becomes the cavity while its cross-section decreases. The opening time of the cavity is found independent of the projectile velocity. For supersonic projectiles, the dynamics of the cavity can be decomposed into an initial impulse and a subsequent elastic response that can be modeled by a damped harmonic oscillator.
ACCESSION #
63542413

 

Related Articles

  • Higher Landau modes and dust shielding in field-driven ion flows. Kompaneets, R.; Ivlev, A. V.; Vladimirov, S. V.; Morfill, G. E. // AIP Conference Proceedings;11/28/2011, Vol. 1397 Issue 1, p56 

    It is demonstrated that it can be essential to use a self-consistent kinetic approach in order to study the ion modes and the shielding of charged dust particles in a weakly ionized plasma with an ion flow driven by an electric field.

  • Stochastic heating of dust particles in complex plasmas as an energetic instability of a harmonic oscillator with random frequency. Marmolino, Ciro // Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p103701 

    The paper describes the occurrence of stochastic heating of dust particles in dusty plasmas as an energy instability due to the correlations between dust grain charge and electric field fluctuations. The possibility that the mean energy ('temperature') of dust particles can grow in time has been...

  • Linearized gyrofluid model of the alpha-destabilized toroidal Alfvén eigenmode with continuum damping effects. Spong, D. A.; Carreras, B. A.; Hedrick, C. L. // Physics of Fluids B: Plasma Physics;Oct92, Vol. 4 Issue 10, p3316 

    The toroidicity-induced shear Alfvén eigenmode (TAE) can be destabilized by energetic particle populations through inverse Landau damping. It may also be significantly damped by coupling with adjacent shear Alfvén continua. A gyrofluid model with Landau closure that includes both of these...

  • Harmonic Oscillator with Fluctuating Mass. Gitterman, Moshe // Journal of Modern Physics (21531196);Oct2011, Vol. 2 Issue 10, p1136 

    We generalize the previously considered cases of a harmonic oscillator subject to a random force (Brownian motion), or having random frequency, or random damping. We consider here a random mass which corresponds to an oscillator where the particles of the surrounding medium adhere to the...

  • Multicenter Higgs oscillators and Calogero model. Yeghikyan, V. // Physics of Atomic Nuclei;Mar2010, Vol. 73 Issue 3, p555 

    We show that the spherical part of N-particle Calogero model describes, after exclusion of the center of mass, the motion of the particle on ( N − 2)-dimensional sphere interacting with N( N − 1)/2 force centers with Higgs oscillator potential. In the case of four-particle system...

  • SPECTRUM OF STRANGE AND NONSTRANGE BARYONS BY USING GENERALIZED GÃœRSEY RADICATI MASS FORMULA AND HYPERCENTRAL POTENTIAL. SALEHI, NASRIN; RAJABI, ALI AKBAR; GHALENOVI, ZAHRA // Acta Physica Polonica B;Jun2011, Vol. 42 Issue 6, p1247 

    In this work, we study the spin and flavor dependent SU(6) violations in the strange and nonstrange baryons spectrum using a simple approach based on the Gürsey Radicati mass formula (GR). The average energy value of each SU(6) multiplet is described using the SU(6) invariant interaction...

  • Sea quark densities in the effective chiral quark model with generalized harmonic oscillator potential. Yazdanpannah, M.; Mirjalili, A.; Dehghanzadeh, M. // European Physical Journal C -- Particles & Fields;Nov2012, Vol. 72 Issue 11, p1 

    The solution of the Dirac equation with a generalized harmonic oscillator potential is used to extract the constituent bare parton densities. The results are firstly in spatial space which are converted to momentum space, using the Fourier transformation. The final results are presented in terms...

  • Charging of a dust particle in a plasma with a non extensive electron distribution function. Tribeche, Mouloud; Shukla, Padma Kant // Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p103702 

    We present a theoretical model for the electrostatic charging of a spherical dust particle in an electron-ion plasma with streaming ions and a nonextensive electron distribution function following a non-Maxwell-Boltzmann law. The non-extensive electron distribution function drastically affects...

  • Colomb crystallization in colloidal plasmas with streaming ions and dust grains. Shukla, P. K.; Rao, N. N. // Physics of Plasmas;May96, Vol. 3 Issue 5, p1770 

    Studies the test charge potential of a dust particle in dusty plasmas with equilibrium ion and dust particle drifts. Possibility of a Coulomb crystallization due to an attractive force between like polarity particulates; Electrostatic potential around a test dust particle.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics