Posted: Jun 28, 2011 11:47 am
by rainbow
klazmon wrote:
atrasicarius wrote:
rainbow wrote:Sure. The 'reaction' is not however supposed to be between nickel and nickel(endothermic), but between nickel and hydrogen(possibly exothermic)
...but then they're not exactly showing the reaction mechanism here, so who knows?

IIRC, if the end result is anything larger than iron, the reaction is endothermic, so it shouldn't matter. Iron is the ideal state that nuclear reactions always want to move towards.

You would have to end up with an isotope of Cu with a greater binding energy per nucleon than the starting isotope of Ni. As you say, the details of the reaction don't matter at all. Only the end result matters with respect to it being exothermic or endothermic.

Yes, but perhaps with less binding energy than one proton plus one nickel nucleus.
If we take the heaviest stable isotope of nickel - Ni64 and added a proton we'd get Cu65, not so?
Question: Would the mass of Cu65 be more or less than Ni64 plus a proton?