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January 2026
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Fusion energy: Progress, partnerships, and the path to deployment
Over the past decade, fusion energy has moved decisively from scientific aspiration toward a credible pathway to a new energy technology. Thanks to long-term federal support, we have significantly advanced our fundamental understanding of plasma physics—the behavior of the superheated gases at the heart of fusion devices. This knowledge will enable the creation and control of fusion fuel under conditions required for future power plants. Our progress is exemplified by breakthroughs at the National Ignition Facility and the Joint European Torus.
T. Iijima, S. Hagiwara, S. Tanaka, A. Tonegawa, Kazutaka Kawamura, Kohnosuke Sato
Fusion Science and Technology | Volume 63 | Number 1 | May 2013 | Pages 417-419
doi.org/10.13182/FST13-A16973
Articles are hosted by Taylor and Francis Online.
Ion acceleration of high density sheet plasma (ca. 1018 m-3) in a non-uniform magnetic field by ion-cyclotron resonance (ICR) is investigated in a linear divertor plasma simulator, TPD-Sheet IV. The radio frequency (RF) electrodes consist of two parallel plates. The ion energy along the axis of the magnetic field or in the perpendicular direction was measured using a Faraday cup. The experiment was conducted using helium gas and a discharge current of 50 A. The ion energy in the direction perpendicular to the magnetic field line increases by with ion-cyclotron resonance. Ions are also accelerated along the axis of the magnetic field line due to the magnetic field gradient along the axis.
