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ANS Student Conference 2025
April 3–5, 2025
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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
C. Christopher Klepper, Taner Uckan, Peter K. Mioduszewski, Robert T. McGrath, P. Hertout
Fusion Science and Technology | Volume 14 | Number 2 | September 1988 | Pages 288-298
Technical Paper | Plasma Engineering | doi.org/10.13182/FST88-A20262
Articles are hosted by Taylor and Francis Online.
Design of edge components for a plasma device requires a description of heat and particle flows at the edge of the device. In a tokamak, the ripple of the toroidal field affects the direction of such flows by affecting the direction of the field. In Tore Supra, in particular, the ripple is large (≤8% at the outboard edge). This causes a substantial (factor of ≤2) increase in heat flux deposited onto the limiter and antenna face. It also reduces the particle removal efficiency of the pump limiters by increasing the distance between the throat opening and the plasma edge. It is therefore important to include the ripple when designing plasma edge components such as pump limiters and radio-frequency antennas. A simple, but accurate, scheme for field line tracing is found and used to study this effect. Modeling of the ripple is discussed.