🚀 go-pugleaf

crb7q@kelvin.seas.Virginia.EDU (Cameron Randale Bass) writes:

>In article <00966330.AB98DB60.10309@dancer.nscl.msu.edu> blue@nscl01.nscl.msu.edu writes:
>>Could someone set my mind at ease by making a clear statement as to
>>what is know about sonoluminescence, ultracavitation, and related
>>topics as opposed to conjecture based on doubtful interpretations of
>>a very limited data set?

>     The dataset is not as limited as it sounds, and the recent results
>     are a) consistent with earlier results, b) plausable on theoretical
>     grounds, and c) apparently well done.

>>My understanding of cavitation and bubble formation is that it can
>>involve a very small move away from equilibrium conditions.  All that
>>is required is that the local pressure in the liquid fall below the
>>vapour pressure.  I would assume that the bubble fills with vapour
>>on a time scale close to that required for collapse so I don't
>>understand why there is any talk about collapse into a "void".

>     Yes.  Void is used by fluid dynamicists to talk about a 
>     space filled with vapour.  We shouldn't be talking about a vacuum.

  Some food for thought.  What we seem to be discussing is how the 
energy of cavitation can lead to fusion.  IMHO, it's an excellent 
question, so let me give you my simple thought model of how it works.
Get a balloon, and put some dots on it.  The dots represent molecules
of the liquid at the void/liquid interface.  As you blow the balloon
up (representing the expansion of the void), add more dots to maintain
an equal spacing of dots.  As you draw lines between the dots (representing 
bonding) you can see this should collect a large number of electrons at the
surface interface (many weakly bonded).  The vapor molecules are self-
contained.  The collapse of the balloon, must then either push the additional
dots back to it source, or be pushed into the void area.  Either way a
significant number of bonds are broken at the surface, and that suggests
the emission of quanta. 

    Still the the release of electrons during the void collapse should 
concentrate at the center of the void.  If we assume the void is a fusible
vapor, two actions occur. Kinetic energy is transferred from the 
collapsing surface to the center by EM forces of the lattice, and 
free electron densities increase at the center.  It follows from 
the work of S. Koonin, that these combinations are optimal enhanced
fusion rates.

Have fun,
Chuck Sites
chuck@coplex.com