*** > For the physics people. How do you accelerate > neutrons? And what is the energy level involve to > accelerate enough mass to form a 120MW beam? You don't. At least not in any way that I know. *** Please forgive this; I had surgery on Monday, and may be loopy from pain meds, but as a fan of Full Thrust gaming, I often play with PSB (psuedo-science bulls**t) It is possible to form neutrons from protons and electrons, right? Couldn't you accelerate converging beams of protons and electrons? Cooking them back to neutrons at near relativistic speeds is where you need the magic box, though. ;->= On the other hand, if I were chatting this on the Full Thrust list, I'd be complaining that the thread was getting a wee off topic. The_Beast (who has to go lie down now) -Douglas J. Evans, curmudgeon One World, one Web, one Program - Microsoft promotional ad Ein Volk, ein Reich, ein Fuhrer - Adolf Hitler