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What about this: https://www.newscientist.com/article/2333346-ignition-confir... Allegedly ignition was achieved a year ago. How is this different?
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Like comparing an amateur pickup basketball team to the Chicago Bulls.
Here's your most exciting paragraph > LLNL’s experiment surpassed the fusion threshold by delivering 2.05 megajoules (MJ) of energy to the target, resulting in 3.15 MJ of fusion energy output, demonstrating for the first time a most fundamental science basis for inertial fusion energy (IFE). Many advanced science and technology developments are still needed to achieve simple, affordable IFE to power homes and busines…
That's a very apt analogy, as both this and Manhattan are weapons research programs. I'm not very excited in hearing we'll get even more powerful thermo-nuclear bombs.
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2.05 MJ is what made it into the system from the laser. It took a lot more to power the laser.
That's what I was trying to figure out. So is it still a net-negative overall?
It's scientifically interesting because a self-sustaining reaction (until the fuel was consumed that is) was achieved in a lab setting (as opposed to in a hydrogen bomb). There might be fusion plasma data in there that are of importance to more serious attempts at actually building fusion reactors.
> LLNL’s experiment surpassed the fusion threshold by delivering 2.05 megajoules (MJ) of energy to the target, resulting in 3.15 MJ of fusion energy output, demonstrating for the first time a most fundamental science basis for inertial fusion energy (IFE) Yesterday, everyone was complaining about the 2.2:2.0 ratio, but now we're working with 3.15:2.05. With modern lasers, that'd be a total Q of 0.375 assuming 100% ef…
This tweet claims that 500MJ of energy was required: https://twitter.com/latzenpratz/status/1602686252486217728 > "had to put 500 megajoules of energy into the lasers to then send 1.8 megajoules to the target - so even though they got 2.5 megajoules out, that's still far less than the energy they originally needed for the lasers," says Tony Roulstone of the University of Cambridge. But it's good to finally see progre…
I hate to ask this, but have to ... is there any danger of these discoveries being weaponized easily by hostile countries? i.e. does this make unconventional weapons more accessible to countries who otherwise have embargoes on technology and material to make atomic weapons?
Oops, answered my own question I guess: https://en.wikipedia.org/wiki/Pure_fusion_weapon That ain't good. Although fusion is clearly the future of energy, we have to get our sh*t together on earth so we don't kill ourselves off or devolve with endless wars. Or give up and use fusion to leave the planet efficiently.
Here's your most exciting paragraph > LLNL’s experiment surpassed the fusion threshold by delivering 2.05 megajoules (MJ) of energy to the target, resulting in 3.15 MJ of fusion energy output, demonstrating for the first time a most fundamental science basis for inertial fusion energy (IFE). Many advanced science and technology developments are still needed to achieve simple, affordable IFE to power homes and busines…
It will be time to unleash resources once they have a working fusion reactor design in order to build fusion power plants and the industrial infrastructure required to supply them.
Until then they should of course get the resources they need but I don't think throwing money at them will necessarily speed things up.
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This tweet claims that 500MJ of energy was required: https://twitter.com/latzenpratz/status/1602686252486217728 > "had to put 500 megajoules of energy into the lasers to then send 1.8 megajoules to the target - so even though they got 2.5 megajoules out, that's still far less than the energy they originally needed for the lasers," says Tony Roulstone of the University of Cambridge. But it's good to finally see progre…
That’s only because they’re using old school flash pumped lasers, not the new solid state lasers you’d use today if you wanted to make a power plant demo.
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I would love to see "fusion Manhattan project", this planet is well overdue for new gigantic R&D projects such as Manhattan and Apollo.
Who are our modern J. Robert Oppenheimer, Enrico Fermi, Richard Feynman, Edward Teller, John Von Neumann, and Stanislaw Ulam?
they're working on getting you to click on an ad
> LLNL’s experiment surpassed the fusion threshold by delivering 2.05 megajoules (MJ) of energy to the target, resulting in 3.15 MJ of fusion energy output, demonstrating for the first time a most fundamental science basis for inertial fusion energy (IFE) Yesterday, everyone was complaining about the 2.2:2.0 ratio, but now we're working with 3.15:2.05. With modern lasers, that'd be a total Q of 0.375 assuming 100% ef…
This is a stupid question but I don't know anything about fusion: How is it possible for X energy to create X+Y energy in output? Doesn't that violate some fundamental law of physics?
When fusion happens, two hydrogen atoms fuse together into one, losing a bit of mass in the process. The mass difference is converted into energy Y (using E=mc2).
In this case, Y was greater than X, so there was a net gain in useful energy.