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- Path: sparky!uunet!dtix!darwin.sura.net!uvaarpa!murdoch!kelvin.seas.Virginia.EDU!crb7q
- From: crb7q@kelvin.seas.Virginia.EDU (Cameron Randale Bass)
- Newsgroups: sci.physics.fusion
- Subject: Mindlessness for the Day
- Keywords: sonoluminescence
- Message-ID: <1992Aug26.160631.20329@murdoch.acc.Virginia.EDU>
- Date: 26 Aug 92 16:06:31 GMT
- Sender: usenet@murdoch.acc.Virginia.EDU
- Organization: University of Virginia
- Lines: 60
- Originator: crb7q@kelvin.seas.Virginia.EDU
-
-
- "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.
-
- In any case, for the Pd-D system, one could hypothesize that the
- relevant cavities are the interstitial sites and that the relevant
- excitation is the higher-order fluctuations of the power supply.
- These are, of course, increased in transient operation.
-
- Now I am of two minds about what follows next in this fantasy.
- The first thought is that the cavities are picking out very
- high frequency components from the power supply forcing, thereby
- concentrating energy deposition in the lattice (the cavities
- in sonoluminescence do this rather well). Thus, the whole phenomenon
- would be nothing more than the relatively efficient concentration
- of high or extremely high frequency excitations unnoticed otherwise.
-
- The second thought is that the cavities act to concentrate
- such 'vibrations' in such a manner as to cause Deuterium ions
- occupying the same interstitial site to fuse (or even Pd and
- D, recalling some vaguely interesting results from a conference
- past). Of course, this sidesteps the necessity of a second miracle to
- unconcentrate the energies in such a manner as to avoid easy detection
- of the gammas and particles that should scream out of the lattice.
- However, for the sake of the argument, we can assume
- that the 'unconcentration' mechanism is the reverse of the
- miraculous 'concentration' mechanism seen in sonoluminescence.
-
- So, something for the 'believers' in the crowd and something for
- the 'disbelievers', take your pick.
-
- I'm sure y'all will pardon me while I go down to the patent office
- to file another of dubious worth.
-
- dale bass
- --
- C. R. Bass crb7q@virginia.edu
- Department of Mechanical and Aerospace Engineering
- University of Virginia
- Charlottesville, Virginia (804) 924-7926
-