The plasma temperature in the tokamaks began to cool as the magnetic pinch was reduced.

The plasma temperature increases from below 5 to around 7 million K; the associated thermal energies are in the range joules.

The current of a biased probe tip is measured as a function of bias voltage to determine the local plasma temperature and density.

The thermal plasma temperatures are in the order of 10,000 K, so that solid powder easily evaporates.

At plasma temperatures exceeding 100 million degrees C, fusion reactions convert mass to energy.

Hot ionised gases, and the impurities they contain, also produce spectral lines that are characteristic of the plasma temperature.

So spectroscopy can yield information on plasma temperatures.

The energy transfer from the fast ions to the plasma increases the plasma temperature.

In an operating fusion reactor, part of the energy generated will serve to maintain the plasma temperature as fresh deuterium and tritium are introduced.

These can be advantageous since a magnetic field itself cannot melt and the plasma temperatures can reach millions of kelvins.