Thermonuclear fusion

Thermonuclear fusion is a way to achieve nuclear fusion by using extremely high temperatures. There are two forms of thermonuclear fusion: uncontrolled, in which the resulting energy is released in an uncontrolled manner, as it is in thermonuclear weapons such as the "hydrogen bomb", and controlled, where the fusion reactions take place in an environment allowing some of the resulting energy to be harnessed for constructive purposes. This article focuses on the latter.

Temperature requirements

Temperature is a measure of the average kinetic energy of particles, so by heating the material it will gain energy. After reaching sufficient temperature, given by the Lawson criterion, the energy of accidental collisions within the plasma is high enough to overcome the Coulomb barrier and the particles may fuse together.

In a deuterium–tritium fusion reaction, for example, the energy necessary to overcome the Coulomb barrier is 0.1 MeV. Converting between energy and temperature shows that the 0.1 MeV barrier would be overcome at a temperature in excess of 1.2 billion Kelvin.

Latest News for: Thermonuclear fusion


Prospective Energy Sources: Fusion Is Hot! (and Cold!)

WhoWhatWhy 21 Jan 2023
This article will be an introduction to fusion energy. Part 2 next week will be a status report on cold fusion — a “dangerous” idea since 1989 ... This is called fusion ... Hydrogen undergoes fusion inside a thermonuclear bomb, aka a hydrogen bomb ... In a thermonuclear bomb, the temperature gets even hotter than the sun, and the fusion is instantaneous....

Unlimited, clean energy is a step closer to reality

Chatanooga Times Free Press 14 Jan 2023
Nuclear fusion, as the joke goes, is the energy source of the future and always will be ... For the first time, a fusion reaction produced more energy than it consumed, an achievement known as ignition ... Fusion is also called a thermonuclear reaction, the same process that lights up our sun....

Nuclear fusion is a reality! Do not invest in nuclear fusion

GreenBiz 12 Jan 2023
Department of Energy along with scientists from the National Ignition Facility at the Lawrence Livermore Laboratories in California announced that they had produced positive energy from a controlled fusion reaction ... 13, fusion as a power source was all theoretical ... Fusion is what is going on in the sun ... Fusion competition is on the way....

International fusion project faces delays amid modifications

Manila Standard 08 Jan 2023
The International Thermonuclear Experimental Reactor project seeks to prove the feasibility of fusion as a large-scale and carbon-free source of energy ... Fusion entails forcing together the nuclei of light atomic elements in a super-heated plasma, held by powerful magnetic forces in a doughnut-shaped chamber called a tokamak....

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