Robin— You raised the following questions and comments:
1) What is this "coherent system", and specifically, in what respect is it coherent, i.e. which property of the system? 2) How do you propose that the nuclear energy is actually coupled to the phonic energy? 3) Changes in angular momentum of nuclei are usually paired with emission of a gamma ray or particle to conserve angular momentum. If you want to avoid this, then you need to provide an actual physical mechanism by which the angular momentum is transferred to the lattice, and specifically what it is in the lattice that it couples to. Furthermore, what is it that makes this method preferable above the usual methods (e.g. gamma emission)? ANSWERS: 1.
