On Dec 20, 2011, at 8:41 AM, David Roberson wrote:
Second, if a small volume of material achieves reaction and
releases several MeV of energy does the material then allow the
reaction to spread? Of course the release of many MeV at the
active region now would be adequate to enable more reactions since
it far exceeds the 100 keV threshold suggested if in the correct
form. Is there evidence pro or con as to whether or not this is
happening?
Chain reactions happen far faster than big atoms move or melt. The
melting is a secondary effect that happens after the reaction is
finished. The nuclear active site, or NAS, appears to be located
below the surface. The melting and expansion drives the material out
through the surface, making a "crater" like formation.
Various estimates of energies and reaction rates have been given.
http://www.lenr-canr.org/acrobat/SzpakSprecursors.pdf
"(vi) Location/size. The presence of discrete, randomly distributed
sites (hot spots, craters, boulders, etc) implies the existence of
volumes within the electrode material where conditions promoting the
highly energetic reactions exist. In estimating their magnitude, one
must make a certain number of assumptions, eg (i) energy per single
event is that of the reaction D + D He, (ii) the number of single
events to produce a crater is on the order of 10^4 or higher,
depending upon its radius[9], (iii) the number of single events
needed to generate the “hot spot” displayed by IRimaging is on the
order of 10^4 or higher, depending upon its size and brightness.
Under these conditions and assuming the loading ratio greater than
unity, one can calculate the radius of this volume to be on the order
of 100 Å or higher. The events take place within the bulk material in
the close vicinity to
the contact surface."
If producing one watt of output requires 6.24x10^11 fusions, as
shown earlier, and each comic ray triggers 10^4 reactions, then
6.24x10^7 pits per second should show up, per watt of output. This
does not appear to be a reasonable pit formation rate, nor anywhere
near a cosmic ray background count. At 4 kW output that would be
about 10^16 pits for a 10 hour test. Pit formation then is a very
unusual thing if high energy density long term reactions exist, as
Rossi claims.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
