Plasma excitation

When the atoms of a gas are excited so heavily that electrons are broken off the atomic bond so that ions are generated, a plasma will form. Excitation can take place in the form of:

Excitation by extreme temperatures

Plasma excitation process in the stars. 99% of the matter in the universe consists of plasma.

High-frequency excitation

A plasma can also be excited by high-frequency electric fields. The higher the excitation frequency and the lower the gas pressure, the easier the excitation of the plasma, and the less energy is required. In low-pressure plasma technology, the plasma is excited by electromagnetic high-frequency fields. The following special feature is found here:

  1. In the evacuated plasma chamber (vacuum chamber), a plasma can be excited in almost any gaseous substance.
  2. The plasma excited by high frequency is cold

In plasma technology, the excitation is carried out by the approved ISM frequencies 40 kHz13.56 MHz or2.45 GHz.

Gas discharge

Gas discharge takes place under hight voltage in strong electric fields. Plasma excited by gas discharge is found:

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