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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.”
Y. Yamaguchi et al.
Fusion Science and Technology | Volume 55 | Number 2 | February 2009 | Pages 106-109
Technical Paper | Seventh International Conference on Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST09-A6992
Articles are hosted by Taylor and Francis Online.
This manuscript reports the high density plasma production with a pair of phase controlled ion-cyclotron range of frequency antennas in GAMMA 10. For the plasma production, the Radio Frequency (RF) power (~10 MHz) is coupled to the fast Alfvén wave in the central cell. The antenna-plasma coupling depends strongly on the antenna structure. In this study, according to the numerical prediction, a pair of double half-turn and Nagoya Type-III antennas is adopted for the excitation of the fast wave. The antennas are driven at the same frequency with controlling their phase difference. It is observed that an optimum phase difference exists in the present density range. The density increases with the RF power and the gas-fuelling rate, when the phase difference is set to the optimum value. The considerable increase in the density was obtained up to twice as large as the conventional value.