On Sat, Aug 17, 2013 at 7:34 AM, Jed Rothwell <[email protected]> wrote:
Yes! They sure do assume that. So far, there has been practically no > evidence that cold fusion produces dangerous radiation. > I'm less concerned about radioactive byproducts (e.g., tritium -- although this is an excellent point I forgot about), and more concerned about x-rays, in the range of 10-300 keV, say. I cannot think of one experiment that involved high power densities (e.g., 10+ W) that did not have a cathode surrounded by water and a metal or glass housing which, together, would have stopped any x-rays. At least in appearance, both Rossi's and Defkalion's setups have containers that could stop x-rays. Note that in the more recent tests, Rossi's E-Cat HT had the metal plugs hammered at both ends. Defkalion's device has thick shielding and looks like a lead box. An apparatus used in some of the earlier experiments, and possibly by Spawar, might sort this question out -- in these experiments, the active cathode formed part of the wall of the device, and there was a detector close by, outside of the system. A good way to make headway on this question would be to get high power densities in one of these setups. If under such conditions there were few to no x-rays, then we can move on to discussions of pacemakers. If there are lots of x-rays, we'd better start thinking of ways to get clever -- in terms of modulating the output, and also in terms of working with regulators. It is not sufficient to get measurable heat in one of these devices and not see x-rays; it would be necessary to get high power densities. It is this latter observable that I have yet to see correlated with low radiation levels. Eric
