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Science 25 January 2002:
Vol. 295. no. 5555, pp. 602 - 603
DOI: 10.1126/science.295.5555.602
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News of the Week

FUSION POWER:
Spherical Tokamaks Are on a Roll

Andrew Watson

Results from two fusion experiments, one in the United States and one in the United Kingdom, suggest that making a reactor spherical with a hole through the middle--like a cored apple--may be more efficient than the traditional doughnut shape. The two machines both managed to confine a hot plasma of hydrogen ions in the dense, calm state used by traditional machines--an important first step toward fusion.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)