In reply to Axil Axil's message of Thu, 23 Aug 2012 21:29:22 -0400: Hi, [snip]
With such a device you can leave the fuel in a long time, burning up most of the actinides. Reprocessing implies extracting the little that remains, and adding it to the fresh fuel, so that over the long term there is no Pu "anything". >Such a concept is not possible politically. Pu239 breeding is not >acceptable both to the government of the US and the current head of the >NRC. The thorium based U232/U233 fuel cycle produced by a fusion/fission >hybrid may be acceptable as proliferation resistant because of the high >level of U232 that is generated by fusion. > >High U232 content in U233 provides 6 barriers to proliferation, compared to >none for Pu239. > >George Miley is a supporter of the fusion/fission hybrid. > >Hans A. Bathe was the originator of the idea > >http://www.marcobresci.it/docs/fusione_ibrida.pdf > >Fusion bred U233 has a very high U232 content due to the 2n and 3n >reaction. This provides U233 with 6 barriers to proliferation, compared to >none for Pu239. U233 can also be denatured with U238. This mix is also >proliferation resistant. > > > > >On Thu, Aug 23, 2012 at 6:50 PM, <mix...@bigpond.com> wrote: > >> In reply to Puppy Dog's message of Thu, 23 Aug 2012 13:21:13 +0300: >> Hi, >> [snip] >> >After fusion in the ball of plasma is completed, the fusion ash and the >> left over tritium and deuterium find its way into a diverter that removes >> it from the burn chamber. The high energy neutrons produced by fusion fly >> out in all directions. It will be these neutrons that will make U233 in the >> thorium blanket that will eventually surround the burn chamber. >> > >> Surely, if D-T is used, then the neutrons are fast enough to fission U238 >> directly, and no breeding is needed. That allows you to use the current >> large >> stockpile of DU as fuel. Actually just about any heavy element or isotope >> will >> serve, allowing you to burn up all the actinide wastes currently in >> storage too. >> Regards, >> >> Robin van Spaandonk >> >> http://rvanspaa.freehostia.com/project.html >> >> Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
