Every nuclear fusion story starts (or has somewhere in it), “the same process that powers the sun”. While that sounds high tech, it doesn’t
really mean anything.
What they are trying to convey is “fusing lighter elements to heavier one(s)”. In the news of “ignition” (it was actually net gain, Q, where
more power was released than used to generate the reaction; in the net gain, Q = 1.3, but to get the reaction running on its own you need a Q = 3
level). What is not explained is the fuel is two isotopes of hydrogen, deuterium and tritium, that are heated to overcome the natural Coulomb force
keeping like charged particles apart. This, thanks to E=mc*2, generates a fast moving neutron and heat. This neutron flies off and hits an energy
blanket surrounding the fusion reactor transferring energy to a usable form that is then used to turn a generator.
Aneutronic nuclear fusion does not create a neutron (hence the Greek use of “a” in front meaning “not”). As a fuel source, boron is used (B11,
specifically) and hit with a proton. Energy is added and the result is alpha particles, three of them, which are charged helium-4 nuclei.
Instead of a fast moving neutron that ionizes any material (irradiates) it runs into (except lithium which makes a tritium particle which is then used
as fuel for future fusion reactions), the charged alpha particles can be converted directly into electrical current: energy!
The problem is that this reaction is more difficult to engineer than D-T fusion that is in the news…
Until last month!
TAE Technologies on Feb. 28, in a peer-reviewed paper published by the scientific journal Nature Communications, said its research
supports the path to providing electricity from nuclear reactors fueled with hydrogen-boron, also known as p-B11 or p11B. TAE said its program, done
in collaboration with Japan’s National Institute for Fusion Science (NIFS), focused on the first-ever hydrogen-boron fusion experiments in a
magnetically confined fusion plasma.
Powermag.com, February 28, 2023 -
Group Touts Milestone for
Hydrogen-Boron Fusion Power.
After all the glory being hogged up by hot D-T nuclear fusion we get a major announcement from the even more difficult to produce Aneutronic fusion
world say, “our idea will work!”
The plan being for TAE (formerly, Tri Alpha Energy, now you don’t have to look up what that means!), to make another reactor showing net gain (Q >
1), called Copernicus, then a reactor called Da Vinci.
It is nice to see that the extra effort put into the more difficult fusion project is paying off!
We are on the cusp of either self destruction or a revolutionary power break through with several nuclear fusion devices coming online.
And still no word from Lockheed ST-5, Demo, ST-X…
PS - Sorry for the science lesson! And if I made any mistakes they are mine since this is mostly off the top of my head on the subject of nuclear
fusion. I did have to verify what an alpha particle is (google)
edit on 2-3-2023 by TEOTWAWKIAIFF because: Aloha particles!! Dumb smart
phone.,,
edit on 2-3-2023 by TEOTWAWKIAIFF because: Correction