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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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Latest News
Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
K. Fujimoto, T. Nakano, H. Kubo, H. Kawashima, K. Shimizu, N. Asakura (19P12)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 247-249
Technical Paper | Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST07-A1364
Articles are hosted by Taylor and Francis Online.
In JT-60U divertor plasmas, deuterium Balmer-series line emission has been measured with a wide-spectral-band spectrometer, which has 92 viewing chords with a ~1cm spatial resolution. Two-dimensional spatial distribution of the Balmer line intensities has been reconstructed using a computer tomography technique (maximum entropy method). In an inner-detached and outer-attached divertor plasma, the intensity of D and D lines were stronger above the strike point in the inner divertor and near the strike point in the outer divertor. The ratio of the D line intensity to the D line intensity was 0.3 - 0.5 above the strike point in the inner divertor and 0 - 0.2 near the strike point in the outer divertor. It suggested that the line emission were attributed to the plasma recombination above the strike point in the inner divertor and the plasma ionization near the strike point in the outer divertor.