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- Newsgroups: sci.physics.fusion
- Path: sparky!uunet!psinntp!dg-rtp!ellerbe!poirier
- From: poirier@ellerbe.rtp.dg.com (Charles Poirier)
- Subject: Re: The importance of being chained
- Summary: A third possibility
- Message-ID: <1992Jul29.232730.2574@dg-rtp.dg.com>
- Sender: usenet@dg-rtp.dg.com (Usenet Administration)
- Date: Wed, 29 Jul 92 23:27:30 GMT
- References: <9207290006.AA08478@sleepy.network.com>
- Organization: Data General Corporation, RTP, NC.
- Lines: 44
-
- In article <9207290006.AA08478@sleepy.network.com> logajan@SLEEPY.NETWORK.COM (John Logajan) writes:
- >It doesn't take a rocket scientist to see that some sort of chain
- >reaction *must* be appealed to....
- >
- >The only logical conclusion to be drawn is that the gain is
- >greater than 1.0000 by some significant amount....
- >
- >I see two general possibilities to explain the absence of mushroom
- >clouds in Orlando and Batavia.
- >
- >One is that at any given time there are only a very few pending
- >event opportunities...
- >
- >The second possibility is that event opportunities can assume bi-
- >stable states....
- >
- > -- John Logajan
-
- A third possibility is that the "stimulated emission" may have a narrow
- cross-section around the path of the stimulating photon. If so, and if
- the emitted gammas follow the path of the initiator exactly, the cascade
- should be limited in scope: each incident gamma might sweep out a very
- small fraction of the volume of Pd. This effect is independent of the
- effects John Logajan proposes, and any or all might be operating to suppress
- the mushroom clouds.
-
- A couple of random thoughts: if CNF is indeed a stimulated emission
- phenomenon, one might expect it to work better in sheets than in wires,
- and better in chunks than in sheets. Random trajectories through the
- material would have a longer average path length in each case.
-
- The other random thought: is there any known way of *reflecting* 23 MEV
- gammas? Or refracting them? Even a fairly low efficiency might be
- useful, given sufficient gain on each pass through the cell. For lasers,
- you like to have a cavity with mirrors on the ends. No one has yet
- brought up this idea, and I expect it is for good reason (eg. it being
- utterly impossible), but I am curious enough to ask.
-
- Even absenting the possibility of reflectors, an obvious thing to try is
- to aim one's beam of gammas down the long axis of a rod-shaped Pd electrode
- so as to maximize path length.
-
- Cheers,
- Charles Poirier
-