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Post by Kerr on Jun 8, 2017 13:45:03 GMT
I don't really get it, where do these distances come from? And by radiation are you referring to fast neutrons? Is something like this feasible? Inverse square law, for a 1TW D-T rocket use 800GW and the inverse square law, after some distance you get below 4,5 MW per square meters. I don't know how many x-ray it produces at the temperature of 100 kev, only that it is the temperature with the lowest amount of x-ray. It should survive, but now try to build a p+B11, you can achieve higher exhaust velocities. Oh wait the 5% Neutrons, No it won't, the neutrons will release 1535 GW of heat to the walls. The wall should reach temperatures of 18000K, but with active cooling you can reduce this value by 2-3x times. Also the neutrons might just pass through the 45µm walls. So probably it might work.
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Post by Kerr on Jun 8, 2017 13:48:15 GMT
I talked with a guy on Isaac Arthur's facebook group, and he suggested the polywell instead of antimatter catalyst. How do you want to build a rocket engine using a polywell design? It's a reactor design.
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Post by The Astronomer on Jun 8, 2017 13:55:12 GMT
I talked with a guy on Isaac Arthur's facebook group, and he suggested the polywell instead of antimatter catalyst. How do you want to build a rocket engine using a polywell design? It's a reactor design. My bad XD Can this method be applied to rockets though?
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Post by Kerr on Jun 8, 2017 14:03:04 GMT
How do you want to build a rocket engine using a polywell design? It's a reactor design. My bad XD Can this method be applied to rockets though? If you have some giants superconductive magnet rings laying around. Polywell attract ions to it's core, as they accelerate towards it they gain KE, with enough energy they fuse. Problem is, if had to deactivate the magnetic field and activate other magnets the utilize the plasma for thrust. Theoretically: yes Practically: No
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Post by Enderminion on Jun 8, 2017 14:47:34 GMT
My bad XD Can this method be applied to rockets though? If you have some giants superconductive magnet rings laying around. Polywell attract ions to it's core, as they accelerate towards it they gain KE, with enough energy they fuse. Problem is, if had to deactivate the magnetic field and activate other magnets the utilize the plasma for thrust. Theoretically: yes Practically: No t soonanything is possible
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Post by Kerr on Jun 8, 2017 14:49:53 GMT
RiftandRendAre you gonna make DT/D-He³/pB11 fusion with anti hydrogen as fuel? Give it the density of air or something to simulate the gap, and use NdFeB as tank material.
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Post by Kerr on Jun 8, 2017 14:54:41 GMT
If you have some giants superconductive magnet rings laying around. Polywell attract ions to it's core, as they accelerate towards it they gain KE, with enough energy they fuse. Problem is, if had to deactivate the magnetic field and activate other magnets the utilize the plasma for thrust. Theoretically: yes Practically: No t soonanything is possible Any ideas how to make a reactor which is designed to contain a fusion to be a effective rocket engine?
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Post by The Astronomer on Jun 8, 2017 14:58:47 GMT
That guy on Isaac Arthur's facebook page told me that antimatter-catalyzed fusion is not possible.
Any counters?
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Post by Kerr on Jun 8, 2017 15:04:00 GMT
That guy on Isaac Arthur's facebook page told me that antimatter-catalyzed fusion is not possible. Any counters? Next thing you gonna tell me is that giant metal objects can fly,pff Did he at least gave some arguments?
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Post by The Astronomer on Jun 8, 2017 15:05:50 GMT
That guy on Isaac Arthur's facebook page told me that antimatter-catalyzed fusion is not possible. Any counters? Next thing you gonna tell me is that giant metal objects can fly,pff Did he at least gave some arguments? 'Your antimater catalyzed fusion sounds hoaky to me because I can't see how it would help except by neutron bombardment. Which isn't very effective because most fusion fuels have very low neutron cross sections.' - Jon de Pinet
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Post by Kerr on Jun 8, 2017 15:08:22 GMT
Next thing you gonna tell me is that giant metal objects can fly,pff Did he at least gave some arguments? 'Your antimater catalyzed fusion sounds hoaky to me because I can't see how it would help except by neutron bombardment. Which isn't very effective because most fusion fuels have very low neutron cross sections.' - Jon de Pinet Antimatter and Neutron bombardment? Does he really believe that several studies and some of which from NASA are wrong?
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Post by The Astronomer on Jun 8, 2017 15:13:29 GMT
'Your antimater catalyzed fusion sounds hoaky to me because I can't see how it would help except by neutron bombardment. Which isn't very effective because most fusion fuels have very low neutron cross sections.' - Jon de Pinet Antimatter and Neutron bombardment? Does he really believe that several studies and some of which from NASA are wrong? I don't know, but how do amat reaction starts fusion reaction, exactly?
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Post by Kerr on Jun 8, 2017 15:16:26 GMT
Antimatter and Neutron bombardment? Does he really believe that several studies and some of which from NASA are wrong? I don't know, but how do amat reaction starts fusion reaction, exactly? Kinetic Energy/Thermal (basically the same thing) And maybe Muons, if you let the charged pions enough time, but that might actually even decrease effectiveness.
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Post by Enderminion on Jun 8, 2017 15:50:53 GMT
That guy on Isaac Arthur's facebook page told me that antimatter-catalyzed fusion is not possible. Any counters? nope no AM reaction is going to start a fusion reaction not at all, nevermind the more then needed energy released by the AM reaction over a short enough time that it can start fusion, nope, nope, nope
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Post by The Astronomer on Jun 8, 2017 15:53:50 GMT
That guy on Isaac Arthur's facebook page told me that antimatter-catalyzed fusion is not possible. Any counters? nope no AM reaction is going to start a fusion reaction not at all, nevermind the more then needed energy released by the AM reaction over a short enough time that it can start fusion, nope, nope, nope Calm the heck down. So amat-catalyzed fusion is a pure bull---- in your view or what?
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