Go Back > Extra Stuff > Soap Box

Thread Tools
Old 2020-08-06, 06:30   #100
retina's Avatar
"The unspeakable one"
Jun 2006
My evil lair

22·5·7·41 Posts
“Lattice confinement” refers to the lattice structure formed by the atoms making up a piece of solid metal. The NASA group used samples of erbium and titanium for their experiments. Under high pressure, a sample was “loaded” with deuterium gas, an isotope of hydrogen with one proton and one neutron. The metal confines the deuterium nuclei, called deuterons, until it’s time for fusion.

“During the loading process, the metal lattice starts breaking apart in order to hold the deuterium gas,” says Theresa Benyo, an analytical physicist and nuclear diagnostics lead on the project. “The result is more like a powder.” At that point, the metal is ready for the next step: overcoming the mutual electrostatic repulsion between the positively-charged deuteron nuclei, the so-called Coulomb barrier.

To overcome that barrier requires a sequence of particle collisions. First, an electron accelerator speeds up and slams electrons into a nearby target made of tungsten. The collision between beam and target creates high-energy photons, just like in a conventional X-ray machine. The photons are focused and directed into the deuteron-loaded erbium or titanium sample. When a photon hits a deuteron within the metal, it splits it apart into an energetic proton and neutron. Then the neutron collides with another deuteron, accelerating it.

At the end of this process of collisions and interactions, you’re left with a deuteron that’s moving with enough energy to overcome the Coulomb barrier and fuse with another deuteron in the lattice.
I have no idea why the article focusses on spacecraft drives when it could be used anywhere (assuming it is a real thing). Probably just to get more clicks.
retina is online now   Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Unfavorable price trends for AWS EC2 spot instances? GP2 Cloud Computing 14 2018-01-11 02:01
How much do you pay for your electric energy? em99010pepe Lounge 31 2011-02-14 01:57
kinetic energy science_man_88 Miscellaneous Math 8 2010-05-29 04:14
Energy Minimization ShiningArcanine Math 2 2008-04-16 13:47
Energy efficiency for LL markhl Hardware 5 2004-02-04 13:33

All times are UTC. The time now is 01:53.

Tue Sep 29 01:53:29 UTC 2020 up 18 days, 23:04, 0 users, load averages: 1.09, 1.37, 1.40

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.