----- Original Message ----- From: Harry Veeder <[EMAIL PROTECTED]> Date: Tuesday, December 9, 2008 9:16 pm Subject: Re: [Vo]:Mizuno comments on CH molecules, and on his personal situation
> > > ----- Original Message ----- > From: [EMAIL PROTECTED] > Date: Tuesday, December 9, 2008 5:35 pm > Subject: Re: [Vo]:Mizuno comments on CH molecules, and on his personal > situation > > > In reply to Edmund Storms's message of Tue, 9 Dec 2008 15:04:33 - > > 0700:Hi, > > [snip] > > >Apparently all spontaneous nuclear reactions are exothermic. > This > > is > > >required because a nuclear process cannot obtain the required > > large > > >amount of energy from the local environment fast enough. In > > contrast, > > >a chemical reaction is much slower and is satisfied with energy > > that > > >can be stolen from a few surrounding atoms. > > > > > >Ed > > This is fine, but not a complete answer. The question that Jed > asks is > > legitimate, and is also an option that I suggested in slightly > > different words > > some days back. > > > > Though individual endothermic reactions don't occur, a "compound" > > reaction might > > occur. Such a reaction would actually only be a single reaction, > > but could be > > thought of (or viewed) as a combination of exothermic and > > endothermic reactions. > > The sort of reaction I'm talking about is e.g. where two or more > > nucleitemporarily fuse, then fission into different fragments > than > > they started out > > as. Reactions of this sort *could* end up being only very > slightly > > exothermic,and could be classed as almost pure transmutation > > reactions. > > In fact conventional fission is an example of this. Two "nuclei" > > fuse, i.e. a > > U235 nucleus and a single neutron, which is followed by fission > > into a variety > > of fragments. However in this case the energy release is > considerable.> > > Regards, > > > > Robin van Spaandonk <[EMAIL PROTECTED]> > > > > > If He4 splits into D2+D2 wouldn't that be endothermic if the reverse > process is exothermic? > > Harry > oops i mean if He4 splits into D + D wouldn't that be endothermic if the reverse process is exothermic? Harry
