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Fig.(1.1) " Dusty plasma" versus " Dust in a plasma"

Many investigations for observations and experiments in dusty plasmas

have been introduced [50-53]. On the other hand, observations recorded
new types of planetary rings. Galileo-Ulysses missions collected new Earth’s

atmosphere [54]. Also a series of experiments are performed to study basic

phenomena under microgravity conditions [55, 56]. It was noted that the

energy for dynamical system in dusty plasmas is different from electron-
ion plasma [57, 58]. So, dusty plasma branch is very important because:

1- Electric charge in dust particles causes electromagnetic and gravita-

tional forces.

2- Dust grains participate in the collective plasma processes.
3- The basics of dusty plasma dynamics introduce implications in the

advancements of science.

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