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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. Kobayashi, M. Yoshikawa, T. Kato, I. Murakami, Y. Kubota, K. Matama, T. Cho (19P15)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 256-258
Technical Paper | Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST07-A1367
Articles are hosted by Taylor and Francis Online.
In the fusion plasmas, impurity behavior is important issue because of radiation loss and plasma-wall interactions. Spectroscopic measurements were carried out in the GAMMA 10 tandem mirror in order to investigate impurity transfer and plasma diagnostics. Oxygen ions were strongly emitted in the central cell of GAMMA 10. Then we have developed the collisional-radiative model for lower charge state of oxygen ions. The spatial profiles of OII, OIII, OIV and OV spectra were observed by the absolutely calibrated ultraviolet/visible spectrometer. Further more, spatial density profiles of O+, O2+, O3+ and O4+ were evaluated by the comparison of measurements and the CR-model calculation.
