What is the highest temperature that could be obtained artificially?

Question

I am not talking about the temperature in the core of stars or something but I mean the highest temperature obtained artificially.

Answer 1

I think there are some fusion plasma reactors out there that are used by the scientific community that can attain temperatures as high as millions of degrees Celsius. They don't generate electricity, but are used for research purposes

Also, there was a scientific paper published recently that discussed bubble fusion. A collapsing bubble in liquid deuterated acetone was said to reach temperatures high enough to cause nuclear fusion to occur (about 10 million degrees), although the validity of the experiment was questioned by subsequent researchers.

Answer 2

Probably the highest temperature that can be achieved is inside a fusion bomb when it detonates. The temperature of the sun is 15,600,000 K, where fusion naturally takes place.

Answer 3

In isolated spin systems the temperature can be practically infinite. In fact it can go beyond infinity to a negative temperature regime.