Does the energy of free charge carriers in a gas increase or decrease if it is pumped out of a gas discharge

Does the energy of free charge carriers in a gas increase or decrease if it is pumped out of a gas discharge tube with a pump? How does this energy change?

The energy will increase. Because the distance between molecules decreases and the mean free path increases. An electron is accelerated by an electric field, and the longer it accelerates, the greater its speed and kinetic energy.

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