Swedish Institute of Space Physics, IRF
http://www.irf.se/~christer/plasmForBeg.html
Plasmas for beginners
The ara as many plasmas as there are people who study them!
Here are two type of plasmas you can think of.
WhirligigBeetle-Plasma.
It is two dimensional and consists of femaleWhirligigs, maleWhirligigs and waves:
Småland Sweden (1993 christer)
To the right: Single whirligigs makeing waves. Streaming water Puerto Rico (1995 christer)
More about them
IntensNightTraffic-Plasma.
It is unstable according to the twoStreamInstabillity
An interesting multi parameter system but not a plasma!