In reply to Jed Rothwell's message of Mon, 21 May 2018 11:00:54 -0400: Hi, [snip] >Russ <russ.geo...@gmail.com> wrote: > >Might you point to a reference where the mass of neutrons in deuterium vs. >> other nuclides is said to be different. >> > >I do not understand. Is the claim here that a neutron in deuterium is >heavier or lighter than a neutron in some other element?
Yes (heavier), that's what I'm suggesting. > There are >different kinds or neutrons, or entering deuterium changes the mass? The latter. The energy release from the nuclear reaction has to came from somewhere. I am simply saying that it comes from the conversion of part of the mass of the constituent particles. > >That seems extremely unlikely to me. Then you need to explain where the fusion energy comes from. (I'm counting addition of a neutron to a nucleus as a form of fusion). Note that the formation of D from a free proton & a free neutron releases only 2.2 MeV of energy whereas at the other extreme, addition of a neutron to a Ni nucleus releases about 8 MeV of energy. Hence my conclusion that neutrons in Ni have lower mass than those in D. Regards, Robin van Spaandonk local asymmetry = temporary success