Plasma jet acceleration of dust particles to hypervelocities

Ticoş, C. M.; Wang, Zhehui; Wurden, G. A.; Kline, J. L.; Montgomery, D. S.
October 2008
Physics of Plasmas;Oct2008, Vol. 15 Issue 10, p103701
Academic Journal
A convenient method to accelerate simultaneously hundreds of micron-size dust particles to a few km/s over a distance of about 1 m is based on plasma drag. Plasma jets which can deliver sufficient momentum to the dust particles need to have speeds of at least several tens of km/s, densities of the order of 1022 m-3 or higher, and low temperature ∼1 eV, in order to prevent dust destruction. An experimental demonstration of dust particles acceleration to hypervelocities by plasma produced in a coaxial gun is presented here. The plasma flow speed is deduced from photodiode signals while the plasma density is measured by streaked spectroscopy. As a result of the interaction with the plasma jet, the dust grains are also heated to high temperatures and emit visible light. A hypervelocity dust shower is imaged in situ with a high speed video camera at some distance from the coaxial gun, where light emission from the plasma flow is less intense. The bright traces of the flying microparticles are used to infer their speed and acceleration by employing the time-of-flight technique. A simple model for plasma drag which accounts for ion collection on the grain surface gives predictions for dust accelerations which are in good agreement with the experimental observations.


Related Articles

  • Tunable Diode Laser Absorption Spectroscopy of Metastable Atoms in Dusty Plasmas. Do, Hoang Tung; Hippler, Rainer // AIP Conference Proceedings;9/7/2008, Vol. 1041 Issue 1, p225 

    Spatial density profile of neon metastable produced in dusty plasma was investigated by means of tunable diode laser absorption spectroscopy. The line averaged measured density drops about 30% with the presence of dust particles. The observations provide evidence for a significant interaction...

  • Liquid- and crystallike structures in strongly coupled dusty plasmas. Fortov, Vladimir E.; Molotkov, Vladimir I.; Nefedov, Anatoli P.; Petrov, Oleg F. // Physics of Plasmas;May99, Vol. 6 Issue 5, p1759 

    Dust particle ordering is discussed in various types of low-temperature plasma, such as thermal plasmas at atmospheric pressure, dc glow discharges, UV- and radioactivity induced plasmas. The investigations of UV-induced dusty plasma were made under microgravity conditions. Experimental data are...

  • The interaction of stationary and moving objects with dusty plasmas. Thompson, C. O.; D'Angelo, N.; Merlino, R. L. // Physics of Plasmas;May99, Vol. 6 Issue 5, p1421 

    The interaction of an electrically floating metal object with a dusty plasma formed in a dc discharge was investigated experimentally. Three cases were studied in which (a) the object was at rest in the dusty plasma, or was moved through the dusty plasma with a speed that was either (b) on the...

  • On the use of dust plasma acoustic waves for the diagnostic of nanometer-sized contaminant.... Kortshagen, U. // Applied Physics Letters;7/14/1997, Vol. 71 Issue 2, p208 

    Examines the potential of dust acoustic waves for using an accurate particle size diagnostic of nanometer-sized contaminant particles on plasma. Analysis on dispersion characteristics of dust acoustic waves in the plasma; Description of dust component as a single fluid; Use of acoustic waves as...

  • Plasma-Dust Structures at Cryogenic Temperatures. Fortov, V. E.; Vasilyak, L. M.; Vetchinin, S. P.; Zimnukhov, V. S.; Nefedov, A. P.; Polyakov, D. N. // Doklady Physics;Jan2002, Vol. 47 Issue 1, p21 

    Studies plasma-dust structures at cryogenic temperatures. Methods for increasing nonideality of dust plasma; Dust structures in glow-discharge and high-frequency discharge plasma.

  • Charge fluctuations for particles on a surface exposed to plasma. Sheridan, T. E.; Hayes, A. // Applied Physics Letters;2/28/2011, Vol. 98 Issue 9, p091501 

    We develop a stochastic model for the charge fluctuations on a microscopic dust particle resting on a surface exposed to plasma. We find in steady state that the fluctuations are normally distributed with a standard deviation that is proportional to (CTe)1/2, where C is the particle-surface...

  • Modelling Of Generation And Growth Of Nanoparticles In Low-Pressure Plasmas. Gordiets, B. F. // AIP Conference Proceedings;9/7/2008, Vol. 1041 Issue 1, p23 

    Theoretical kinetic models of generation and growth of clusters and nanoparticles in low-pressure plasma are briefly rewired. The relatively simple kinetic model is discussed more detail. Simple formulas and equations are given for monomer density; cluster dimension distribution; critical...

  • Charging time for dust grain on surface exposed to plasma. Sheridan, T. E. // Journal of Applied Physics;Apr2013, Vol. 113 Issue 14, p143304 

    We consider the charging of a dust grain sitting on a surface exposed to plasma. The stochastic model of Sheridan and Hayes [Appl. Phys. Lett. 98, 091501 (2011)] is solved analytically for the charging time, which is found to be directly proportional to the square root of the electron...

  • Equilibrium of a plasma in the fluid- and Vlasov—Maxwell systems. Mahajan, Swadesh M.; Li, Wann-Quan // Physics of Fluids B: Plasma Physics;Dec89, Vol. 1 Issue 12, p2345 

    It is shown that a recently constructed exact solution of the Vlasov equation describing a plasma with density and temperature gradients can be expressed in terms of the constants of motion. The distribution function is then used to illustrate the differences between a Vlasov and a one-fluid...


Read the Article


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

Try another library?
Sign out of this library

Other Topics