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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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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.
K. Oki, M. Sakamoto, Y. Nakashima, M. Yoshikawa, R. Nohara, K. Nojiri, A. Terakado, M. Mizuguchi, K. Ichimura, H. Takeda, M. Iwamoto, Y. Hosoda, K. Shimizu, M. Yoshikawa, J. Kohagura, T. Imai, M. Ichimura
Fusion Science and Technology | Volume 68 | Number 1 | July 2015 | Pages 81-86
Technical Paper | Open Magnetic Systems 2014 | dx.doi.org/10.13182/FST14-896
Articles are hosted by Taylor and Francis Online.
In tandem mirror GAMMA 10/PDX, H2 gas has been injected to a divertor simulation experimental module (D-module) for radiation cooling and detachment study. Electron temperature (Te) and density (ne) distributions have been measured by Langmuir probes in the D-module. With increase of H2 gas amount, Te has decreased especially at the V-shaped target plate from 30-40 eV to 3-5 eV. Moreover, ne and ion saturation current Iis have increased at the inlet but decreased at the target and had a steeper distribution toward the corner. These results suggest detachment. The movement of the ionization front to the upstream side with increase of the gas is suggested from the change in the plasma parameters profiles along the magnetic field line.