<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">What you are missing includes <br>1) Disposal of long term hazardous nuclear waste.<br>2) Problems in maintaining / decommissioning ol older nuclear fission plants<br>3) Examples like we are seeing Ukraine's nuclear plants caught up in a war.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Dec 16, 2022 at 2:59 AM Gillian Densmore <<a href="mailto:gil.densmore@gmail.com">gil.densmore@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Ok so this is cool and all. <br></div><div>Sigh I'll ask <i>that</i> question. We want less carbons because <a href="https://www.youtube.com/watch?v=IFgBFYkBZ6E" target="_blank">the planet is on f'n fire</a> . As far as I know humans (in the very least) accelerated climate change. Ie we made this mess clean it up. ok fair so far I'm following.</div><div>So uh why not just start with fission (breeders) ? Why not also put as much money into matter/anti matter as well as fusion? We can make minute amounts of antimatter in massive collider. I'd think something who's by product are xrays gamma and some other stuff with a lot of energy created would be a massive honney pot the department of energy would pursue as well.</div><div>I know the answer to fission (sadly) is NIMBY. (yes but it's a lot cleaner and safer than oil and coal I say) <br></div><div>I don't know why we haven't looked at other things as well</div><div>What I'm saying is fusion has been humans icarus wings with it being just arround the corner for decades. while matter/anti matter is (sort of) here. Fission is here. Want zero carbons? cool! so why not build out a ton of reactors we already can do. Or am I missing something?<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Dec 14, 2022 at 8:31 AM Marcus Daniels <<a href="mailto:marcus@snoutfarm.com" target="_blank">marcus@snoutfarm.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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How ICF might evolve into a power plant:
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<div> <a href="https://firstlightfusion.com/technology/power-plant" target="_blank">https://firstlightfusion.com/technology/power-plant</a><br>
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<div dir="ltr">Sent from my iPhone</div>
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<blockquote type="cite">On Dec 14, 2022, at 7:16 AM, glen <<a href="mailto:gepropella@gmail.com" target="_blank">gepropella@gmail.com</a>> wrote:<br>
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<div dir="ltr"><span>Excellent! Thanks. I think I'll have to push this topic for another day. I've got a few more links from other fora I'll plop here just in case I only land back here if/when I pop it off the stack later:</span><br>
<span></span><br>
<span><a href="https://lasers.llnl.gov/news/magnetized-targets-boost-nif-implosion-performance" target="_blank">https://lasers.llnl.gov/news/magnetized-targets-boost-nif-implosion-performance</a></span><br>
<span><a href="https://spie.org/news/nuclear-fusion-nifs-hall-of-mirrors-may-solve-worlds-energy-crisis?SSO=1" target="_blank">https://spie.org/news/nuclear-fusion-nifs-hall-of-mirrors-may-solve-worlds-energy-crisis?SSO=1</a></span><br>
<span><a href="https://www.science.org/content/article/fusion-power-may-run-fuel-even-gets-started" target="_blank">https://www.science.org/content/article/fusion-power-may-run-fuel-even-gets-started</a></span><br>
<span><a href="https://arstechnica.com/science/2022/12/what-enabled-the-big-boost-in-fusion-energy-announced-this-week/" target="_blank">https://arstechnica.com/science/2022/12/what-enabled-the-big-boost-in-fusion-energy-announced-this-week/</a></span><br>
<span></span><br>
<span>On 12/13/22 16:23, Steve Smith wrote:</span><br>
<blockquote type="cite"><span>I think DT refers simply to the remaining fraction of Deuterium/Tritium remaining after the reaction event (-4%) without specific accounting for remaining D vs T.</span><br>
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<blockquote type="cite"><span>My understanding is that D-T fusion occurs at a lower temperature than D-D but that once fusion commences (starting with D-T), both D-T and D-D reactions occurring in similar amounts. In laser-driven ICF (as with NIF) I believe
the ratio of D/T is nominally 50/50 though it would seem to make sense to have a higher T to D ratio but most references I see imply equal portions. An equal number of D-D and D-T reactions would seem to consume D more quickly, though as that commences,
the D/T ratio would go down, making D-T reactions (yet) more likely... tricky business, no wonder it has taken decades to get to this point?</span><br>
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<blockquote type="cite"><span>The Wikipedia Entry on ICF is pretty good: <a href="https://en.wikipedia.org/wiki/Inertial_confinement_fusion" target="_blank">https://en.wikipedia.org/wiki/Inertial_confinement_fusion</a></span><br>
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<blockquote type="cite"><span>I found several popular science Articles which seem to reinforce my sense that this "breakthrough" is not as significant as implied:</span><br>
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<blockquote type="cite"><span> <a href="https://www.science.org/content/article/fusion-breakthrough-nif-uh-not-really" target="_blank">https://www.science.org/content/article/fusion-breakthrough-nif-uh-not-really</a></span><br>
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<blockquote type="cite"><span>Other interesting/relevant links regarding D-T and D-D fusion...</span><br>
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<blockquote type="cite"><span><a href="https://www.researchgate.net/publication/263507001_Species_separation_and_modification_of_neutron_diagnostics_in_inertial-confinement_fusion/figures?lo=1" target="_blank">https://www.researchgate.net/publication/263507001_Species_separation_and_modification_of_neutron_diagnostics_in_inertial-confinement_fusion/figures?lo=1</a></span><br>
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<blockquote type="cite"><span><a href="https://www.energy.gov/science/doe-explainsnuclear-fusion-reactions" target="_blank">https://www.energy.gov/science/doe-explainsnuclear-fusion-reactions</a> <<a href="https://www.energy.gov/science/doe-explainsnuclear-fusion-reactions" target="_blank">https://www.energy.gov/science/doe-explainsnuclear-fusion-reactions</a>></span><br>
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<blockquote type="cite"><span><a href="https://science.jrank.org/pages/4732/Nuclear-Fusion-D-D-D-T-reactions.html" target="_blank">https://science.jrank.org/pages/4732/Nuclear-Fusion-D-D-D-T-reactions.html</a> <<a href="https://science.jrank.org/pages/4732/Nuclear-Fusion-D-D-D-T-reactions.html" target="_blank">https://science.jrank.org/pages/4732/Nuclear-Fusion-D-D-D-T-reactions.html</a>></span><br>
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<blockquote type="cite"><span>On 12/13/22 4:36 PM, glen wrote:</span><br>
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<blockquote type="cite"><span>That's why I asked. I guess I'll assume DT means both deuterium and tritium, not just deuterium. If you were going to track fuel use, you'd track the rarer part more closely, right?</span><br>
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<blockquote type="cite"><span>On 12/13/22 09:22, Frank Wimberly wrote:</span><br>
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<blockquote type="cite"><span>DT = deuterium?</span><br>
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<blockquote type="cite"><span>---</span><br>
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<blockquote type="cite"><span>Frank C. Wimberly</span><br>
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<blockquote type="cite"><span>140 Calle Ojo Feliz,</span><br>
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<blockquote type="cite"><span>Santa Fe, NM 87505</span><br>
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<blockquote type="cite"><span>505 670-9918</span><br>
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<blockquote type="cite"><span>On Tue, Dec 13, 2022, 10:21 AM glen <<a href="mailto:gepropella@gmail.com" target="_blank">gepropella@gmail.com</a> <mailto:<a href="mailto:gepropella@gmail.com" target="_blank">gepropella@gmail.com</a>>> wrote:</span><br>
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<blockquote type="cite"><span> Awesome. Thanks. I'm still trying to catch up with the QC Wormhole kerfuffle. Who knew Quanta was so click baity?</span><br>
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<blockquote type="cite"><span> What is "DT"?</span><br>
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<blockquote type="cite"><span> On 12/13/22 09:02, Marcus Daniels wrote:</span><br>
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<blockquote type="cite"><span> > In case no one wanted to get up at 7:00am to watch DOE administrators talk:</span><br>
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<blockquote type="cite">
<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 1. Controlling the laser in space and time was important for maintaining symmetry. Timing precision of 25e-12 secs and laser spatial precision of 5e-12 meter were needed. This was thought to be the main explanation for
the achievement.</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 2. 8% more power on the laser this time</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 3. x-ray tomography is used to find flaws in the capsules. Developing software to do the counting.</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 4. They have ongoing efforts to study the fabrication systems and their components (done in Germany) to find idiosyncrasies of each.</span><br>
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<blockquote type="cite"><span> > 5. Laser technology improvements since NIF was built which are 20% more efficient.</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 6. Target cost is from labor, and it takes 7 months each</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 7. 4% of DT is burned in a shot</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 8. Machine learning ties together radiation hydrodynamics and experimental data. (It sounded preliminary.)</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 9. The (successful) capsule had more defects than previous experiments. However, previous experiments did show benefits from capsule quality.</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 10. 15% of experiments are indirect drive of this kind, 15% of experiments are other approaches to ignition. The rest are weapons and materials characterization.</span><br>
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<blockquote type="cite"><span> ></span><br>
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<blockquote type="cite"><span> > 11. Anomalous laser directional control were problems in the summer runs. Fixed that.</span><br>
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<span></span><br>
<span></span><br>
<span>-- </span><br>
<span>ꙮ Mɥǝu ǝlǝdɥɐuʇs ɟᴉƃɥʇ' ʇɥǝ ƃɹɐss snɟɟǝɹs˙ ꙮ</span><br>
<span></span><br>
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