Hi Bob, On Fri, Oct 16, 2015 at 12:41 AM, Bob Cook <[email protected]> wrote:
HOWEVER, THERE ARE NO FAST NEUTRONS IN THE SUGGESTED REACTIONS. > The discussion below concerns gammas rather than neutrons. There would be a gamma photon with every nickel neutron capture, which is the main proposed reaction. (And a gamma photon with every other neutron capture.) I also think neutrons would be a problem, but they're not discussed below. Eric > Bob Cook > > *From:* Eric Walker <[email protected]> > *Sent:* Thursday, October 15, 2015 9:41 PM > *To:* [email protected] > *Subject:* Re: [Vo]:Re: Swedish scientists claim LENR explanation > break-through > > On Thu, Oct 15, 2015 at 10:55 PM, Bob Cook <[email protected]> > wrote: > > I believe the authors know what they are about. >> > > The authors approach the energy balance problem in two steps, and the > first step is extremely endothermic. It's pretty difficult to separate a > neutron from 7Li or d and requires on the order of ~ MeV. Only after this > first step is the energy debt paid back in a second step involving the > exothermic neutron capture reaction (which would be accompanied by > deexcitation gammas). I think the Bank of Heisenberg would send their > repossession men before the second step could occur in quantity. > > The authors say this about the energy balance: > > > Nickel embodies the internal power/heat source via neutron capture, while > spallation is a cooling factor for lithium and deuterium. Nickel is > therefore the main attractor of matter within the reactor confinement. > > > In other words, losing that neutron is understood to be "cooling." > > Also, to expand upon Jones's point, consider that to produce 1 W of heat > at ~ 10 MeV per neutron capture, you will need ~ 6.242e+11 captures per > second. If your apparatus was able to stop all but 0.00001 percent of the > deexcitation gammas, you'd still get 62420 gammas per second leaking > through the containment. Now scale that 1 W up to 1 kW or 10 kW for useful > power, and that 62420 gammas becomes 62.4 million gammas per second > escaping through the containment. You will now need walls that can stop > 0.00000000001 percent or more gammas to hide the signal in the background. > Even if you could accomplish this, after running your reactor for a while, > the apparatus would be extremely radioactive. > > The authors do not appear to be aware that these implications of their > explanation are difficulties that need to be addressed, either in general > or in the context of what is known about LENR. > > Eric > >
