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


Seeing Silicon | Why Sam Altman and other tech magnates are banking on fusion

Hindustan Times 18 Feb 2024
When Sam Altman talked about fusion at Davos, it reminded me of a decades-old science fiction trope. As a sci-fi author, I know all that there is to know about fusion power — a human-made Sun that offers limitless power, an energy solution to all imagined sciences and technology ... The real-life tech of fusion is tricky....

What the US needs to do to win the fusion race

The Hill 12 Feb 2024
2, 2023, the People’s Republic of China formed a national fusion energy consortium, uniting its state-led research and industrial efforts into a single entity. As one Chinese fusion entrepreneur put it, nuclear fusion is now a national priority ... Fusion has been a potential solution to humanity's energy usage for decades....

Nuclear fusion breakthrough: British reactor sets a new world record after releasing 69 megajoules...

The Daily Mail 09 Feb 2024
What is nuclear fusion?. Fusion involves placing hydrogen atoms under high heat and pressure until they fuse into heavier helium atoms ... The British facility, said to cost £20-30 million per year to run, is seen as a predecessor to the $22.5 billion (£15.9 billion) International Thermonuclear Experimental Reactor (ITER) being built in France....

So What Would Happen If You Could Throw A Baseball At Near Light Speed?

IFL Science 07 Feb 2024
Advertisement. Unfortunately, the scenario doesn't end well for the batter, the catcher, people watching in the stadium behind, or those in any nearby city ... The front of the ball gets ripped apart by fusion, but even these constant thermonuclear explosions wouldn't slow the ball down that much given how fast it was going ... ....

Scientists create effective 'spark plug' for direct-drive inertial confinement fusion experiments

Phys Dot Org 05 Feb 2024
Scientists from the University of Rochester's Laboratory for Laser Energetics (LLE) led experiments to demonstrate an effective "spark plug" for direct-drive methods of inertial confinement fusion (ICF) ... Gopalaswamy says that direct-drive ICF is a promising approach for achieving thermonuclear ignition and net energy in laser fusion....

Hybrid Energy Storage Becomes Big Business

Pressat 01 Feb 2024
Thursday 1 February, 2024 ... Power and speed ... Electric equivalents include the new unmanned mining, thermonuclear fusion power and electromagnetic and electrodynamic weapons arriving ... Actual examples include the Chinese microgrids, shunting locomotives and mining vehicles, the Japan Tokamak fusion reactor and Toyota fuel cells now using them....