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Researchers Report Record High Temperatures in Compact Fusion Device Step taken towards environmentally safe, cheap and unlimited energy May 28, 2002. A team of researchers has announced the achievement for the first time of temperatures above one billion degrees in a dense plasma. The breakthrough, achieved with a compact and inexpensive device called the plasma focus, is a step toward controlled fusion energy using advanced fuels that release little or no radioactivity. "We have achieved a key condition needed to burn hydrogen-boron fuel," said Eric J. Lerner of Lawrenceville Plasma Physics, one of the researchers. "This fuel produces virtually no...