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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.”
A. Mayoral, J. Sanz, D. López, R. Vila
Fusion Science and Technology | Volume 62 | Number 1 | July-August 2012 | Pages 276-282
Fusion Technology Facilities | Proceedings of the Fifteenth International Conference on Fusion Reactor Materials, Part A: Fusion Technology | doi.org/10.13182/FST12-A14147
Articles are hosted by Taylor and Francis Online.
The Spanish Technofusion project includes an irradiation laboratory equipped with two tandem-type accelerators (protons/deuterons and alphas) and a multi-ion cyclotron (heavy ions).A radioprotection issue concerning activation of the irradiated samples is to establish the required "cooling" waiting period for safe handling. Samples of iron, Al2O3, SiO2, and SiC are considered here.In dealing with this task, inventory calculations have been performed using, in addition to cross-section data available in different activation libraries, experimental data for some dominant reactions that have not yet been considered in the generation of the corresponding evaluated activation cross sections. Residual dose rate results, calculated from the radioactive inventory determined using both evaluated data alone and a combination of evaluated and experimental data, are compared and the impact of the results on handling limitations analyzed.Very affordable cooling times are found suitable for the irradiated samples. The calculated cooling times meeting safe handling requirements are expected to have high reliability for the proton beam in Al2O3 and the alpha beam in Fe and relatively high reliability for the proton beam in SiO2 and Fe as well as the alpha beam in Al2O3 and SiO2; only deuteron beam is satisfactory for Al2O3; and finally, for SiC, all cases are unsatisfactory.
