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- From: aboulang@bbn.com (Albert Boulanger)
- Newsgroups: sci.physics.fusion
- Subject: Re: Mindlessness for the Day -- Theory or Mindlessness^2
- Date: 26 Aug 92 13:35:01
- Organization: BBN, Cambridge MA
- Lines: 54
- Message-ID: <ABOULANG.92Aug26133501@kariba.bbn.com>
- References: <1992Aug26.160631.20329@murdoch.acc.Virginia.EDU>
- Reply-To: aboulanger@bbn.com
- NNTP-Posting-Host: kariba.bbn.com
- In-reply-to: crb7q@kelvin.seas.Virginia.EDU's message of 26 Aug 92 16:06:31 GMT
-
-
- In article <1992Aug26.160631.20329@murdoch.acc.Virginia.EDU> crb7q@kelvin.seas.Virginia.EDU (Cameron Randale Bass) writes:
-
-
- "Theoretical explanations for this phenomenon, especially
- as regards the fast time scales, is lacking. Here we have
- reported that the spectral peak lies at photon energies which
- are higher than those required to dissociate the molecules
- comprising the medium in which energy concentration occurs."
- (Phys. Rev. Lett. 69:1182 (1992))
-
- I was reading along in an article on sonoluminescence and
- it occured to me that we could postulate a similar mechanism
- (unknown, of course) for 'anomalous phenomena in metal hydrides'.
- After all, with sonoluminescence we have cavities (bubbles)
- in which very strong (actually, miraculously strong) concentration
- of acoustical energy occurs. In the above quoted experiment,
- field average sound energy level is about 10^-11 eV/atom and
- the spectral peak is somewhere above 6 eV (Could be far above.
- They report the spectrum to fit the tail of a 25000K blackbody,
- though there is no reason to assume an equilibrium process
- at all.).
-
- They thus find at least 12 orders of magnitude concentration
- of the imposed sound field, concentrations that actually seem
- implausible since the medium dissociates below these energies.
-
-
- I have posted this reference a couple of times since I think it is a
- pretty neat energy concentration theory that may play a role in sonoluminescence:
-
- "Minimal Chaos and Stochastic Webs"
- A.A. Chernikov, R.Z Sagdeev, D.A. Usikov, M Yu Zakharov, & G.M. Zaslavsky
- Nature Vol 326 (9 April) 1987, 559-563
-
- Abstract:
- "Particles within a stochastic -- or chaotic -- web in phase space can
- be accelerated to high energies even by weak magnetic fields, and the
- properties of the web show similarities to the quasicrystal state.
- Examples of webs with five- and sevenfold symmetries are given. The
- establishment of stochastic webs and structural coverings of the phase
- plane may yield new and unexpected results"
-
- From the Summary:
- "... Similarly, the solution of the problem of the existence of the
- stochastic web allows one to establish the limits of adiabatic
- invariance and analyse the origin of ultra-high energy cosmic ray
- particles. ... Our results suggest the existence of a similar
- stochastic web in problems of hydrodynamic structures and structural
- modification of solids. ..."
-
- Regards,
- Albert Boulanger
- aboulanger@bbn.com
-