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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.
Keiji Miyazaki, Yoshio Shimakawa, Shoji Inoue, Nobuo Yamaoka, Yoichi Fujii-E
Fusion Science and Technology | Volume 4 | Number 2 | September 1983 | Pages 733-738
Blanket and First Wall Engineering | doi.org/10.13182/FST83-A22947
Articles are hosted by Taylor and Francis Online.
A medium-scale lithium-loop with 40 /min and 3bar ratings was constructed to gain basic information on MHD effects on the flow and heat transfer characteristics. The loop has two parallel test sections for pressure drop and heat transfer experiments, which were made of 15.75 mm I.D. and 19.05 mm O.D. 316-SS tubes and placed between magnet poles of 500 mm vertical length. The pressure drop test section was provided with two strain gage type pressure transducers and the heat transfer test section with a 300 mm long 7.6 mm O.D. high flux electric heater pin. The experiment covered the ranges of the magnetic flux density: 0–1.0 T, The Li flow velocity: 0.2 –5.0 m/sec, the heat flux: 0–120 W/cm2 and the Li temperature: 350–400 °C. The experimental results of potential and pressure drop agreed well with the theoretical prediction based on the uniform-velocity thick wall model. The heat transfer coefficient, or Nusselt number, was decreased with increasing magnetic flux density, but not monotonically in a weak magnetic field region of 0.2–0.4 T, where a singular phenomenon , i.e. an elevation of Nusselt number was observed.