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Different Types Of Necs Or Complex Plasmas

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>“Dusty” or “complex” plasmas consist of the usual combination of electrons, ions, and neutral atoms with the addition of charged, dust particulates of size ranging from tens of nanometers to tens of micrometers. In the plasma environment, these heavy dust particles can acquire a negative charge of the order of (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) Z (-- removed HTML --) (-- removed HTML --) d (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) ∼ (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) 10 (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) 4 (-- removed HTML --) (-- removed HTML --) (-- …show more content…

As a result, the dust particles have a much smaller charge to mass ratio than electrons and ions, which makes the time scales of dust dynamics comparatively much longer. Additionally, the larger sized and highly massive particles possess a very low thermal velocity and hence allow them to be visualized using laser illumination and high-speed cameras. Thus, dusty plasma offers an excellent medium for studying various phenomena at single particle and fluid levels with remarkable temporal and spatial resolutions. (-- removed HTML --) (-- removed HTML --) In a typical laboratory experiment, the dust cloud is levitated near the sheath boundary by balancing the electrostatic force due to the sheath electric field and the gravity. The highly charged particles interact with each other via a strong electrostatic potential that may exceed the thermal energy, and plasma becomes strongly coupled. The strength of coupling can be determined by a coupling parameter Γ, which is the ratio of the interparticle coulomb potential energy to the dust thermal energy (-- removed HTML --) (-- removed

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