How hot does a fusion reaction have to be?

Answer 1

The basic answer is that nuclear fusion can only occur at VERY high temperatures like MILLIONS of degrees.

You can relate it to the sun where the sun is around 10mil degrees and bonds hydrogen atoms to form helium.

Answer 2

In a tokamak on Earth, the plasma of deuterium and tritium mixture is heated to several hundred million degC. In the sun the fusion reaction is rather different because of the intensely high pressure (due to gravity) at the sun's centre, and such high temperatures are not necessary to start fusion.

Answer 3

For nuclear fusion to occur, the temperature must reach millions of degrees Celsius. This is necessary to overcome the electrostatic repulsion between positively charged atomic nuclei and facilitate the fusion process.

Answer 4

The temperature required for fusion varies depending on the substances being fused.

Answer 5

The threshold temperature for hydrogen fusion, sometimes referred to as the proton-proton chain, is 10-14 million K (Kelvin). The Sun's core is approximately 15,700,000 Kelvin.

Answer 6

In man-made fusion the plasma has to reach at least 100 million deg C before the deuterium/tritium reaction will proceed

Answer 7

Millions of temperature degrees