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The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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Nuclear Science and Engineering
Fusion Science and Technology
NEA issues call to action in report on nuclear cost reductions
A new report from the Paris-based OECD Nuclear Energy Agency declares that nuclear power is needed for countries to meet their Paris Agreement decarbonization and energy security policy goals, but that governmental support for a rapid reduction in the cost of new nuclear capacity through the creation of certain policy frameworks is likely necessary.
H. Takahashi, A. Okamoto, T. Takahashi, S. Kitajima
Fusion Science and Technology | Volume 68 | Number 1 | July 2015 | Pages 190-195
Technical Note | Open Magnetic Systems 2014 | dx.doi.org/10.13182/FST14-910
Articles are hosted by Taylor and Francis Online.
This technical note reports the first experimental investigation aiming for divertor plasma dynamics study using helium recombining plasma and energetic helium ion beam. A divertor plasma relevant experiment was performed using a linear plasma device, DT-ALPHA, and a multicusp ion source. The radial profiles of the line emission intensities from helium Rydberg atoms were investigated, and the reaction rate of volumetric recombination was confirmed to increase in the central region of the cylindrical plasma. Then an energetic helium ion beam was superimposed onto the helium recombining plasma. The optical emission intensities from the helium recombining plasma with and without energetic ions were obtained and compared. The temporal evolution of the optical emission indicated that charge-exchange momentum transfer between energetic helium ions and ground state helium atoms can affect population density even in recombining plasma where population density is dominated by recombining processes rather than ionizing processes.