The Cross-Field Acceleration of Charged Dust Grains by the Ponderomotive Force of Compressional Waves in Dusty Plasmas

Details The Cross-Field Acceleration of Charged Dust Grains by the Ponderomotive Force of Compressional Waves in Dusty Plasmas The Cross-Field Acceleration of Charged Dust Grains by the Ponderomotive Force of Compressional Waves in Dusty Plasmas

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...629l..93s&link_type=abstract

The Astrophysical Journal, Volume 629, Issue 2, pp. L93-L95.

Astronomy and Astrophysics

Astronomy

5

Acceleration Of Particles, Ism: Dust, Extinction, Ism: Kinematics And Dynamics, Magnetohydrodynamics: Mhd, Turbulence

Scientific paper

In this Letter, it is shown that the ponderomotive force of the compressional Alfvén-Rao (CAR) mode in a magnetized plasma can create space charge electric fields that accelerate charged dust grains across the external magnetic field direction. It is found that the cross-field dust grain acceleration is proportional to the gradient of the CAR mode magnetic field intensity. This result is of relevance for our understanding of the origin of high-energy dust in the interstellar medium.

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