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Plasma Focus Fusion

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Instapundit linked this item – Compact Fusion Experiment Demonstrates Confinement of 100 keV (Billion-Degree) Ions in Dense Plasma which is indeed cool news:

In a breakthrough in the effort to achieve controlled fusion energy, a research team at Lawrenceville PlasmaPhysics, Inc. (LPP) in Middlesex, NJ, announced that they have demonstrated the confinement of ions with energies in excess of 100 keV (the equivalent of a temperature of over 1 billion degrees C) in a dense plasma. They achieved this using a compact fusion device called a dense plasma focus (DPF), which fits into a small room and confines the plasma with powerful magnetic fields produced by the currents in the plasma itself. Reaching energies over 100 keV is important in achieving a long-sought goal of fusion research—to burn hydrogen-boron fuel. Hydrogen-boron, (also known by its technical abbreviation, pB11) is considered the ideal fusion fuel, since it produces energy in the form of charged particles that can be directly converted to electricity. This could dramatically cut the cost of electricity generation and eliminate all production of radioactive waste.

The dense plasma focus has been studied for over 40 years. However, LPP has been able to make great strides since its ―Focus-Fusion-1 experimental device started producing data in October, 2009, due to its unique, patented design. Most importantly, its electrodes, which produce the self-pinching action that concentrates the plasma and current, are much smaller than those of other DPF devices with similar peak currents. The electrode assembly is only 4 inches across and less than 6 inches in length.

The fusion energy yields achieved in these experiments are still far less than the energy used to run the machines. However, LPP hopes to make rapid progress in the coming year when the machine will be running with hydrogen–boron fuel for the first time.

They’ve made more progress in fusion in the last couple years than billion dollar efforts achieved in decades.  What may not be apparent at first sight, though, is that the lead researcher behind all this progress – Eric Lerner of Lawrenceville Plasma Physics – is the author of The Big Bang Never Happened, and his proposed ideas regarding plasma cosmology – quasars and the like.

Robert Bussard of Bussard Ramjet fame had another line of investigation that was similar in some respects – the Polywell – but funding ran out and then he died from multiple myeloma.  Research does continue though.


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