chrismb wrote:tomclarke wrote:I was not addressing does Rossi fusion make sense, just whether p+62Ni->63Cu is exothermic. There seemed to be some doubt!
Oh, OK. Yes, there is some doubt left in DT's thinking. But otherwise, yes, a p+62Ni->63Cu reaction - for which NNDC has cross-section data so it is a reaction that can happen - releases an energetic gamma. This is known. Whether it is likely is a different fish, indeed.
So? The question is not whether the Ni62 + P reaction might release energy. Your example demonstrates this. The question is if there is NET energy release. To determine this you need to know how much energy was released- like a gamma, and how much energy was input- essentially the kinetic energy of the two particles approaching each other that is necessary for a likely fusion to occur. This is a common consideration and is the basis of the fusion crossection curve.
As nuclei grow the protons accumulate and produce increasing Coulomb repulsion that must be overcome.
Also, I don't understand the resistance to my arguements. M<y communication skills (and several readjustments of my arguements may have fogged the picture some) but my conclusions are merely restatements of published and accepted physics.
Please take my descriptions with a grain of salt. But pursue the several references I have presented. They are consistent.
Also, note I have mentioned, but otherwise ignored the confounding factors such as neutrons, quantum states, etc. that can cause local deviations from the binding energy curve (such as at helium4 and carbon12). If there are at the peak region of Ni62, they are small as they are not shown as large deviations on the chart.
Ross's claim that he is getting energy out is because of his secret catalyst that somehow allows this input kinetic energy to be reduced to a fraction of an eV. Any other explaination would have been observed in nature, and like I've repeatedly pointed out, would result is significantly different astronomical observations.
That is why some discussion here to try to replicate Rossi's claims are useless. Without the claimed catalyst, you cannot disprove the claims. You must depend on his demonstrations. All you can do is to try to force him to eliminate variables that could be confounding of actually fraudulent.
To make any conclusions you must have transparent and careful measurements (calorimetry, flow rates, etc.) If you have to keep a black box- fine, but everything going in and cumming out must be carefully and openly measured.
Dan Tibbets
To error is human... and I'm very human.