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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!europa.asd.contel.com!gatech!concert!uvaarpa!murdoch!kelvin.seas.Virginia.EDU!crb7q
- From: crb7q@kelvin.seas.Virginia.EDU (Cameron Randale Bass)
- Subject: Re: Sonoluminescence - certain knowledge?
- Message-ID: <1993Jan10.195210.15218@murdoch.acc.Virginia.EDU>
- Sender: usenet@murdoch.acc.Virginia.EDU
- Organization: University of Virginia
- References: <1993Jan6.191134.19959@murdoch.acc.Virginia.EDU> <1ipr33INNkem@network.ucsd.edu>
- Date: Sun, 10 Jan 1993 19:52:10 GMT
- Lines: 33
-
- In article <1ipr33INNkem@network.ucsd.edu> mbk@hamilton (Matt Kennel) writes:
- >crb7q@kelvin.seas.Virginia.EDU (Cameron Randale Bass) writes:
- >: No, it is not a small jump. There are clearly shock phenomena
- >: that involve ionization and dissociation, that upon species
- >: recombination can emit light. To then postulate nuclear excitation
- >: from this is not a small leap at all, and the weak links are
- >: basically nonexistent links.
- >:
- >: As far as the photons, they appear to be locallized at the
- >: center of the bubble in 'stable cavitation'. This would make sense
- >: if there were a strong shock-dissociation-recombination chain
- >: of events inside the vapour bubble.
- >
- >When I went to the UCLA lab a few months ago, Prof Putterman said that
- >the light appeared to have a overall macroscopic polarization pattern,
- >which you would not expect from independent atomic recombinations, but
- >rather pointing towards some overall collective phenomenon.
- >
- >I don't know what more recent experimental results say.
-
- You've got me. The most recent work I've seen is in PRL of
- 28 December, received in September. There seems to be no mention of
- polarization. One of the difficult things about such
- a measurement would seem to be the fact that the light comes
- through a shock and a phase discontinuity of currently unknown
- detailed properties.
-
- dale bass
- --
- C. R. Bass crb7q@virginia.edu
- Department of Mechanical,
- Aerospace and Nuclear Engineering
- University of Virginia (804) 924-7926
-