Causes And Effects Of Couloma - 1488 Words

Plasmas containing charged nano- and micro-particles have been extensively studied for several decades. Since they are of fundamental interest, such complex plasma systems have attracted research attention in diverse fields, and novel phenomena have been found and investigated, including the formation of Coulomb dust crystals, dust vortices and voids, cosmic clouds, etc. (-- removed HTML --) (-- removed HTML --) 1–6 (-- removed HTML --) (-- removed HTML --) Dusty plasmas are also relevant to plasma confinement in fusion research and many technological applications. (-- removed HTML --) (-- removed HTML --) 1,7,8 (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) (-- removed HTML --) Many properties of dusty plasmas are†¦show more content†¦(-- removed HTML --) (-- removed HTML --) 25–29 (-- removed HTML --) (-- removed HTML --) In Ref. (-- removed HTML --) 26 (-- removed HTML --) , the time-dependence of the charge of 6.8 (-- removed HTML --) ÃŽ ¼ (-- removed HTML --) m-diameter dust particles in the afterglow of a complex rf plasma under microgravity conditions was investigated experimentally and theoretically. It was found that the dust particle can retain a negative residual charge for a long time. (-- removed HTML --) (-- removed HTML --) 26 (-- removed HTML --) (-- removed HTML --) In Ref. (-- removed HTML --) 30 (-- removed HTML --) , the mean residual charge for 200-nm-radius particles was measured in the afterglow of an rf plasma. It was reported that negatively and positively charged as well as neutral dust particles can coexist for more than a minute after the discharge was switched off. (-- removed HTML --) (-- removed HTML --) 30 (-- removed HTML --) (-- removed HTML --) In Ref. (-- removed HTML --) 31 (-- removed HTML --) , it was shown that particle diffusion in the afterglow of a dusty plasma can be used to establish several properties of the active plasma. In Refs. (-- removed HTML --) 28 (- - removed HTML --) , (-- removed HTML --) 29 (-- removed HTML --) , (-- removed HTML --) 32 (-- removed HTML --) , and (-- removed HTML --) 33 (-- removed HTML --) , plasma