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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
- Subject: Re: Radionuclide Half-Lives
- Summary: inventions
- Message-ID: <1992Jul21.204545.7007@murdoch.acc.Virginia.EDU>
- Date: 21 Jul 92 20:45:45 GMT
- References: <92203.121247CCB104@psuvm.psu.edu> <1992Jul21.172715.3167@murdoch.acc.Virginia.EDU> <24761@dog.ee.lbl.gov>
- Sender: usenet@murdoch.acc.Virginia.EDU
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- Organization: University of Virginia
- Lines: 49
-
- In article <24761@dog.ee.lbl.gov> sichase@csa3.lbl.gov writes:
- >In article <1992Jul21.172715.3167@murdoch.acc.Virginia.EDU>, crb7q@kelvin.seas.Virginia.EDU (Cameron Randale Bass) writes...
- >>In article <92203.121247CCB104@psuvm.psu.edu> <CCB104@psuvm.psu.edu> writes:
- >>>For want of a sponsor or potential "licensee," an official "Invention
- >>>Disclosure" outlining an unconventional method of forcibly changing
- >>
- >> What would be the 'conventional method'? Acceleration to high
- >> energy?
- >
- >As you know, that would not change the decay rate in the nucleus' rest
- >frame. There is however a way to modify some decay rates, though most
- >people don't realize it because they are incorrectly taught that nothing
- >environmental can affect the decay rate of a radioactive nucleus.
- >
- >For nuclei which decay by K capture, the decay rate is sensitive to the
- >electronic structure of the atom. This is obvious, because any capture
- >matrix element will have to include the electron's wave function. So if
- >you take such an atom and bind it in a molecule so that it's electronic
- >orbitals are perturbed, you affect the decay rate of the nucleus.
- >
- >You can look up the details in Segre's book _Nuclei and Particles_. The
- >effect has been experimentally verified. Although I don't know if it has
- >ever been done, you can easily imagine that very high pressures will also
- >change the decay rate of a solid lump of such an element, for the same
- >reasons.
-
- Absolutely, and good point. Another of my thoughts was that an
- appropriate sample placed in a stream of neutrons has altered activity.
- This all underscores the importance of the poster telling
- us exactly what he is talking about in order to arouse some
- real interest.
-
- >I can also imagine that putting a nucleus which is gamma unstable between
- >two plates, ala Casimir, would affect the decay rate by changing the
- >allowed photon spectrum in the gap. But because of the very high frequency
- >the plates would have to be much closer than is typical for the kind
- >of cavity experiments you read about nowadays.
-
- I hadn't thought of this. Perhaps you should apply for
- a patent and issue a 'disclosure' ...
-
- dale bass
-
-
- --
- C. R. Bass crb7q@virginia.edu
- Department of Mechanical and Aerospace Engineering
- University of Virginia
- Charlottesville, Virginia (804) 924-7926
-