On the last page of Putterman's Scientific American article (February 1995, page 37) there is a Figure comparing the Sonoluminescence Spectrum and Bremsstrahlung Radiation.
http://www.physics.ucla.edu/Sonoluminescence/sono.pdf The following paragraph is appended under the Figure. ================================================== "SPECTRUM sonoluminescence shows that most of the emitted light is ultraviolet. As pointed out by Paul H.Roberts and Cheng-Chin Wu of the University of California at Los Angeles, the signal compares closely with bremsstrahlung radiation - that is, light emitted by a plasma at 100,000 degrees kelvins." ================================================== Why does the sonoluminescence spectrum compare closely with bremsstrahlung radiation? Because it is bremsstrahlung radiation. 8-) How can this be? Well, if you rapidly expand a cavity within a water which is held together by external Beta-atmosphere pressure, the Beta-atmosphere pressure, which is well below external ambient B-atm. pressure in the first place (pF 6, say), is going to drop even further. If we have a big tank of water and we punch a hole near the base, water is going to piss out at a high rate of knots as per Bernoulli. If the water is confined in a cavity it is going to swirl around that cavity. What is true of water, true of the Alpha-atmosphere, is also true of the Beta-atmosphere. In effect one has engineered a micro-synchrotron. (shades of the cavity magnetron thread). Once again we have a manifestation of the Vortex. One more manifestation to add to the Hutchison Effect, Shoulders EVO's, etc. Cheers, Frank Grimer
