In reply to Jones Beene's message of Thu, 15 Oct 2015 12:48:43 -0700: Hi, [snip] There is also the problem of the missing prompt gammas which would be emitted as a consequence of the capture of free neutrons.
Note that a neutron transfer/hopping reaction doesn't have this problem because the energy is divided across the two daughter nuclei as kinetic energy, rather than being emitted as a gamma. >What the Swedes should know, but apparently do not fully appreciate, is that >neutrons simply cannot be involved as a modality in LENR, since there is no >induced radioactivity. It is as simple as that. In fact, their theory is >almost an embarrassment. > >Neutrons are insidious and difficult to contain. Even at the lowest energy >(ultra-cold), neutrons will eventually activate almost everything they come in >contact with. The good news would be this activation should serve as instant >proof of LENR when it happens, but the bad news is that it never happens. > >Most of the mass of the Hot Cat is the element aluminum in the form of >alumina ceramic. Neutron activation of aluminum occurs by numerous neutron >capture reactions and the cross-section is substantial for thermal neutrons >(few barns) and gets higher with colder neutrons. Such reactions as 27Al + n = >28Al, 27Al(n,a) 24Na, 27Al(n,2n)26Al and 27Al(n,p)27Mg show up at once. > >Even if by some miracle, only one neutron out of a million diffuses to the >tube wall - these insidious little bastards would activate the alumina into a >radioactive health hazard within minutes of excess heat showing up. The >excited states following activation will undergo beta decay over protracted >time periods and emit gammas as the nuclei de-excite to their respective >ground states. Radioactivity would continue for months. > >Since this does not happen, we can be almost certain that neutrons are not >involved in the Hot Cat operation. > Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
