216 million, for a minute and forty seconds? Was everything in its vicinity vaporized? And pray tell, how was the temperature measured?
Science!
As already stated numerous times in this thread (but unfortunately not in the article itself), the confinement chamber in which the fusion takes place in these Earth-bound fusion reactors is typically kept at a near vacuum - comparable to the near vacuum prevailing within the Earth's thermosphere.
https://en.wikipedia.org/wiki/Thermosphere
The Earth's thermosphere is a layer of our atmosphere. The thermosphere is hundreds of km thick and completely surrounds our planet. The thermosphere has a temperature of about 2,000 °C. But if you could hold a thermometer in it, it would hardly register, because the thermosphere is so very attenuated.
Class dismissed.
Regards,