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Fusion Science and Technology
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Strontium: Supply-and-demand success for the DOE’s Isotope Program
The Department of Energy’s Isotope Program (DOE IP) announced last week that it would end its “active standby” capability for strontium-82 production about two decades after beginning production of the isotope for cardiac diagnostic imaging. The DOE IP is celebrating commercialization of the Sr-82 supply chain as “a success story for both industry and the DOE IP.” Now that the Sr-82 market is commercially viable, the DOE IP and its National Isotope Development Center can “reassign those dedicated radioisotope production capacities to other mission needs”—including Sr-89.
T. Obiki, F. Sano, K. Kondo, H. Zushi, K. Hanatani, T. Mizuuchi, S. Besshou, H. Okada, K. Nagasaki, M. Wakatani, M. Nakasuga, Y. Nakamura, B.J. Peterson, C. Christou, Y. Ijiri, T. Senju, K. Yaguchi, S. Kobayashi, K. Toshi, K. Sakamoto, Y. Kurimoto, F. Funaba, A. Isayama, T. Hamada, Y. Suzuki, K. Kinoshita, H. Sugai, H. Toyota, K. Sasaki, M. Yamage, T. Saito, K. Walanabe, S. Sudo, N. Noda, K. Akaishi, M. Sato, S. Okamura, K. Ida, S. Hidekuma, M. Iima, S. Kado, K. Muraoka, K. Matsuo, H. Matsuura, T.S. Bigelow, M. Murakami, J.F. Lyon
Fusion Science and Technology | Volume 27 | Number 3 | April 1995 | Pages 85-90
Overview Paper | doi.org/10.13182/FST95-A11947050
Articles are hosted by Taylor and Francis Online.
Recent results of Heliotron E experiment are reviewed. Detailed studies of the plasma transport have been achieved in Heliotron E, in which the plasma wall interaction has been changed using the ECH boronization technique. The boronization realized low-density, high-Ti plasmas whose ion collisionality deeply extended to the I/v-regime. The local electron and ion thermal diffusivities in the NBI plasma are analyzed and discussed by comparison with theory-based transport models. The particle transport in ECH plasmas is investigated with edge fluctuation measurements. Both electrostatic and magnetic fluctuations are well correlated with the global particle confinement. Characteristic structures of the electric field or potential distribution are observed during the particle confinement degradation phase. It is considered that dc convective flow across the last closed flux surface is caused by the potential structure. Edge plasma flows have been discussed in connection with these studies and with asymmetric divertor heat/particle load.