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Science Forum Index » Physics - Research Forum » Is it possible to make a gamma-ray laser?...
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| Green Xenon [Radium]... |
 Posted: Tue Jun 10, 2008 6:52 am |
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Hi:
Is it possible to make a free-electron laser that emit coherent gamma
rays? If so, could this laser be used to ignite Hydrogen-Boron fusion?
Thanks,
Radium |
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| Dirk Bruere at NeoPax... |
| Posted: Tue Jun 10, 2008 11:13 am |
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Green Xenon [Radium] wrote:
Quote: Hi:
Is it possible to make a free-electron laser that emit coherent gamma
rays? If so, could this laser be used to ignite Hydrogen-Boron fusion?
Since by definition gamma rays are emitted by nuclei I'd say its
impossible. X-rays of the same wavelength however...
--
Dirk
http://www.transcendence.me.uk/ - Transcendence UK
Remote Viewing classes in London |
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| Ian Parker... |
| Posted: Wed Jun 11, 2008 5:03 pm |
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On 10 Jun, 17:52, "Green Xenon [Radium]" <gluceg... at (no spam) excite.com> wrote:
Quote: Hi:
Is it possible to make a free-electron laser that emit coherent gamma
rays? If so, could this laser be used to ignite Hydrogen-Boron fusion?
Yes it is. A nuclear bomb though is required to pump it. Any
wavelength can theoretically lase. There has in fact been a proposal
to use an X/Gamma ray laser in an ABM system. The theory is all known.
The idea is to point rods towards incoming missiles and then detonate
a nuclear bomb. The material will stay in place just long enough for
the laser pulse.
A free electron laser is I feel impossible as you would need the sort
of magnetic fields you get round black holes.
Whether the laser should be built or not is a political and moral
question. There are you know limits for moral scientific enquiry.
- Ian Parker |
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| Green Xenon [Radium]... |
| Posted: Thu Jun 12, 2008 6:30 am |
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Dirk Bruere at NeoPax wrote:
Quote: Green Xenon [Radium] wrote:
Hi:
Is it possible to make a free-electron laser that emit coherent gamma
rays? If so, could this laser be used to ignite Hydrogen-Boron fusion?
Since by definition gamma rays are emitted by nuclei I'd say its
impossible. X-rays of the same wavelength however...
Then could an X-ray laser be used to initiate HB fusion? |
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| Douglas Eagleson... |
| Posted: Thu Jun 12, 2008 6:30 am |
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On Jun 10, 9:52=A0am, "Green Xenon [Radium]" <gluceg... at (no spam) excite.com>
wrote:
Quote: Hi:
Is it possible to make a free-electron laser that emit coherent gamma
rays? If so, could this laser be used to ignite Hydrogen-Boron fusion?
Thanks,
Radium
A high energy FEL appears theoretically possible and allows a modest
energy. A several MeV energy level is allowed. What happens is a
bunch as the wiggled electron set can not be aligned as a whole
packet, disallowing ultra high energy levels.
A 5 MeV limit effectively exists. Distortion of the bunch causes the
magnetic field to also distort. A focusing is not present in FEL's
because of the difficulty in field gradient versus field x-axis
acceleration. x-axis as the wiggled axis must be a suitably high
displacement and the magnetic field density as a length causes the
field to wiggle as a whole set of accelerator magnets. Meaning the
whole length emitts as a laser, it is not magnet element by element
Bremsstralung.
So the axis free energy as a local effect becomes the stimulated atom
set, in effect, in analogy to a gas laser. FELs are true lasers, but
atomic excitation does not occur.
Axis acceleration versus length magnetic field gradient allows a state
as a wire coil excitation. Excited field coils form the laser in FELs,
not excited gas atoms. A property of the coil allows focusing to
overcome this limitation. An RF waveguided cavity inside the FEL can
allow ultrahigh energy levels. A small linac field will cause a
slight bunching preventing distortion of the wire coil's magnetic
field.
A literal vacuum cavity using suseptable metal becomes the interior of
a good simple wiggler magnet. |
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| Dirk Bruere at NeoPax... |
| Posted: Thu Jun 12, 2008 6:30 am |
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Guest
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Ian Parker wrote:
Quote: On 10 Jun, 17:52, "Green Xenon [Radium]" <gluceg... at (no spam) excite.com> wrote:
Hi:
Is it possible to make a free-electron laser that emit coherent gamma
rays? If so, could this laser be used to ignite Hydrogen-Boron fusion?
Yes it is. A nuclear bomb though is required to pump it. Any
wavelength can theoretically lase. There has in fact been a proposal
to use an X/Gamma ray laser in an ABM system. The theory is all known.
The idea is to point rods towards incoming missiles and then detonate
a nuclear bomb. The material will stay in place just long enough for
the laser pulse.
A free electron laser is I feel impossible as you would need the sort
of magnetic fields you get round black holes.
Whether the laser should be built or not is a political and moral
question. There are you know limits for moral scientific enquiry.
AIUI the US tried to build such a laser and failed.
Too little energy was converted to gamma rays.
Ditto induced gamma emmision from pumped isomers, although any major
success would probably be classified immediately because of its military
implications.
http://en.wikipedia.org/wiki/Induced_gamma_emission
--
Dirk
http://www.transcendence.me.uk/ - Transcendence UK
Remote Viewing classes in London |
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