A new wrinkle to desktop Fusion

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Desktop Fusion is very much a reality -- check out the Farnsworth Fusor (yes, the same Philo Farnsworth who invented Television). The only problem is that this approach doesn't scale so it will not represent a source of power. Still very handy for generating Neutrons! There has been quite a buzz regarding sonoluminescence and now, some people think they are getting close to the real deal... From Science News Online:
Thermonuclear Squeeze: Altered method extends bubble-fusion claim
A technique that some scientists claim generates thermonuclear fusion in a benchtop apparatus works even without its controversial neutron trigger. So say the researchers who, since 2002, have reported that nuclear-fusion reactions can occur in a vat of chilled solvent agitated by ultrasound (SN: 3/6/04, p. 149. If this method of sparking fusion proves to be valid�a big if, critics insist�it could lead to a remarkably simple, cheap, inexhaustible power source.

Fusion reactions take place in the vat because clusters of bubbles form and then violently collapse, explains nuclear engineer and team leader Rusi P. Taleyarkhan of Purdue University in West Lafayette, Ind. A neutron or another energetic particle triggers a bubble to form in a low-pressure trough of the ultrasound waves, he says. Then, high pressure from the wave crushes the orb to an enormous density and temperature that fuse some atomic nuclei of the bubble's gas.

Taleyarkhan and his colleagues have measured neutron emissions as a sign of fusion reactions. Because the group had used neutron pulses to trigger the process, other researchers have been skeptical of its neutron readings.

In an upcoming Physical Review Letters, Taleyarkhan's team presents evidence of fusion in bubbles initiated by a uranium-based trigger that emits alpha particles instead of neutrons. "We got away from the idea of using neutrons to produce neutrons," Taleyarkhan notes.
And if another lab is able to duplicate that work, hold on to your hat and hang on for a very interesting ride...

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This page contains a single entry by DaveH published on January 22, 2006 10:11 PM.

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