In complex plasmas, dust particles are charged through their interactions with the electrons and ions of surrounding plasma. low-temperature laboratory most commonly acquire a negative charge. particular, in glow-discharge plasma, typical charge for micrometer-size grain generally attains few thousands electronic charges. Under stable discharge conditions, this large is relatively well-characte...

We study the effect of negatively charged dust on magnetic-field-aligned polarisation electrostatic field ( $\boldsymbol {E}_{\parallel }$ ) using Cassini's RPWS/LP in situ measurements during ‘ring-grazing’ orbits. derive a general expression for and estimate first time $\lVert \boldsymbol } \rVert$ (approximately $10^{-5} \, \text {V}\, {m}^{-1}$ near Janus Epimetheus rings. further demonstra...

Dusty plasmas are susceptible to the formation of a ‘‘void,’’ a centimeter-size region within the plasma that is free of dust particles. The boundary between the dust-free plasma ~void! and the dusty plasma is typically quite sharp. Praburam and Goree first reported the appearance of a spoke-shaped, dust-free region in a cloud of 100-nm carbon particles in a radio-frequency discharge formed bet...

In laboratory experiments, I study strongly-coupled dusty plasma levitated in a glow-discharge plasma. Dusty plasma is an arrangement of small dust particles in a plasma background of electrons, ions, and neutral gas. The dust particles are negatively charged because they collect electrons and ions from the background plasma. Depending on the experimental setup, the plasma’s electric field can ...