Assuming your coherence length is at least proportional to the De Broglie wavelength (L_DB) and
L_DB = h/p and p = sqrt(2*m*E) where E = kinetic energy, we get L_DB = h/(sqrt(2*m*E)) . Since, as you state above, the energy is "the same" irrespective of type of particle, we see that L_DB is in fact shorter for heavy particles than it is for light ones (the mass is in the denominator). IOW I would expect the coherence length of electrons to be sqrt(1836) ~= 43 times greater than that of protons. IOW I think your quest for heavier particles may be misguided. I believe that you are way off using the deBroglie wavelength as the coherence length. In superconductors the state of the electron can equal the length of the superconductor. This is much longer than the deBroglie waveleigth. I believe that the coherence length is equal to the downshifted Compton wavelength. Frank Z **************Ideas to please picky eaters. Watch video on AOL Living. (http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy/ 2050827?NCID=aolcmp00300000002598)
