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This question already has an answer here:

this company is running a similar project described below. https://firstlightfusion.com/technology/#our-approach Let me clarify here, this is not cold fusion. D&T gas will be compressed very rapidly and its temperature will increase very fast. So, I don't think this is a duplicate question.

I have a new nuclear fusion design. As below picture. enter image description here

This idea is very simple. By accelerating piston (right side) toward the cylinder, we can very easily accelerate piston to speed 100 kilometers per second or higher. The piston will compress D&T mixed gas, and gas will ignite before the cylinder falls to pieces. The cylinder, at this time, you can treat it as a pure fusion bomb. If we put this fusion bomb to a cave and then collect the energy of this bomb and produce electric power. By simply extender accelerating RAIL or improve piston weight, we can easily make the piston with very high kinetic energy to compress D&T gas.

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marked as duplicate by Dale, stafusa, Kyle Kanos, Jon Custer, GiorgioP Mar 13 at 6:13

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    $\begingroup$ Sorry, that's nowhere near enough pressure. See the linked question. $\endgroup$ – PM 2Ring Mar 13 at 0:01
  • $\begingroup$ No, man, my solution is different from "Nuclear Fusion with extremely...", because the mixed gas will be compressed very fast and its temperature will be increased rapidly as well. The fusion process will happen under high pressure and temperature. This is a unique feature. And this ignition process is totally same as typical second stage of hydrogen-bomb explosive. $\endgroup$ – Darwin Zou Mar 13 at 1:12
  • $\begingroup$ I'm sceptical. Please add your pressure and temperature calculations to your question. And if the temperature is supposed to be high, why did you add the cold-fusion tag? $\endgroup$ – PM 2Ring Mar 13 at 1:46
  • $\begingroup$ Sorry, Buddy, I made a mistake. I already remove "cold fusion tag". I am not capable to provide calculations. But, the whole ignition process is exactly similar to hydrogen-bomb. I assume you know how hydrogen-bomb works. In the second stage of hydrogen-bomb, x-ray emitted by fission will heat the container of D&T gas, then the shell of the container will explode and squeeze D&T gas. My solution just repeats the same process of stage 2. And please be aware of the piston speed, it possibly reaches more than 100 kilometers per second. $\endgroup$ – Darwin Zou Mar 13 at 2:14
  • $\begingroup$ A piston travelling at 100 km/s? What type of container do you propose to prevent it from being destroyed on impact? $\endgroup$ – hdhondt Mar 13 at 5:21