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Fusion Science and Technology
Latest News
Zap Energy hits 37-million-degree electron temperatures in compact fusion device
Zap Energy announced April 23 that it has reached 1-3 keV plasma electron temperatures—roughly the equivalent of 11 to 37 million degrees Celsius—using its sheared-flow-stabilized Z-pinch approach to fusion. Reaching temperatures above that of the sun’s core (which is 10 million degrees Celsius temperature) is just one hurdle required before any fusion confinement concept can realistically pursue net gain and fusion energy.
Y. Takemura, K. Ishii, M. Yamanashi, N. Kikuno, A. Fueki, K. Tsutsui, M. Shimoo, T. Saito, K. Yatsu
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 273-276
Poster Presentations | doi.org/10.13182/FST01-A11963459
Articles are hosted by Taylor and Francis Online.
The relation between the radial potential profile of the core plasma are examined in the tandem mirror GAMMA 10. It is observed that the radial potential profiles are convex over the cross section of the plasma column and the high energy end-loss ions over the confinement potential are decreased too in many shots. The radial potential profiles were controlled by changing the electrostatic potential profiles of the separated coaxial end plates. On flattening the radial profiles, the reduction of the high energy end-loss ions was softened and the plasma density increased in the central cell. These results suggest that the flattened radial potential profiles decrease the radial diffusion and improve the confinement of the plasma.