WHAT IS PLASMA?
People are very familiar with the solid, liquid and gaseous states of matter, but not with plasma, the fourth state of matter, which is obtained at sufficiently high energy densities.

Plasma is an ionized gas comprising molecules, atoms, ions (in their ground or in various excited states), electrons and photons. It is electrically conductive since there are free electrons and ions present, and is in local electrical neutrality, since the numbers of free electrons and ions are equal. More than 99% of our known universe is in the plasma state. Lightning and auroras are other common examples on earth.

The high energy content of plasmas compared to that of ordinary gases or even the highest temperature combustion flames offers unlimited potential for its use in a number of significant modern industrial applications.

Thermal plasmas can be generated by


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