| Topic: |
Science > Physics |
| User: |
"" |
| Date: |
26 Mar 2006 03:30:51 PM |
| Object: |
Inducing fission in otherwise stable atoms. |
From http://www2.slac.stanford.edu/vvc/theory/nuclearstability.html we
get that a nucleus will decay if it CAN decay.
What is the probability that you can focus a beam of gamma rays on a
nucleus, send it to an excited state, and give it enough energy that
rather than relaxing from the excited state, it fissions? Can this ever
happen? Has it ever been tested?
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| User: "Llanzlan Klazmon" |
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| Title: Re: Inducing fission in otherwise stable atoms. |
26 Mar 2006 06:40:59 PM |
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wrote in news:1143408651.202820.166150
@v46g2000cwv.googlegroups.com:
From http://www2.slac.stanford.edu/vvc/theory/nuclearstability.html we
get that a nucleus will decay if it CAN decay.
What is the probability that you can focus a beam of gamma rays on a
nucleus, send it to an excited state, and give it enough energy that
rather than relaxing from the excited state, it fissions? Can this ever
happen? Has it ever been tested?
You are talking about "nuclear photodissociation"? This is the process that
is thought to occur during the initial phase of a type II supernova. The
heavy elements are broken down into neutrons, alpha particles and electrons
when the stellar core runs out of fuel and starts to collapse. This is
obviously an endothermic reaction and I guess causes the collapse to
accellerate. The collapse only stops when the pressure is high enough to
force inverse beta decay. Further collapse can then be halted by neutron
degeneracy pressure (provided the core isn't too massive). I recall reading
that nuclear photodissociation has been studied in the lab but I can't help
with any details. Maybe try googling on the subject.
Klazmon.
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| User: "Sam Wormley" |
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| Title: Re: Inducing fission in otherwise stable atoms. |
27 Mar 2006 03:22:34 AM |
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wrote:
From http://www2.slac.stanford.edu/vvc/theory/nuclearstability.html we
get that a nucleus will decay if it CAN decay.
What is the probability that you can focus a beam of gamma rays on a
nucleus, send it to an excited state, and give it enough energy that
rather than relaxing from the excited state, it fissions? Can this ever
happen? Has it ever been tested?
Lookup photodisintigration
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| User: "Gregory L. Hansen" |
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| Title: Re: Inducing fission in otherwise stable atoms. |
27 Mar 2006 09:38:20 AM |
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In article <1143408651.202820.166150@v46g2000cwv.googlegroups.com>,
<Starbles@Earthlink.net> wrote:
From http://www2.slac.stanford.edu/vvc/theory/nuclearstability.html we
get that a nucleus will decay if it CAN decay.
What is the probability that you can focus a beam of gamma rays on a
nucleus, send it to an excited state, and give it enough energy that
rather than relaxing from the excited state, it fissions? Can this ever
happen? Has it ever been tested?
The probability is pretty high.
--
"It is the weak who are cruel. Gentleness can only be expected from the
strong." -- Leo Roskin
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| User: "tj Frazir" |
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| Title: Re: Inducing fission in otherwise stable atoms. |
26 Mar 2006 06:52:25 PM |
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nope .
no photon has the mass to do it
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