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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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.”
Paul P.H. Wilson, H. Tsige-Tamirat, Hesham Y. Khater, Douglass L. Henderson
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 784-788
Fusion Blanket and Shield Technology | doi.org/10.13182/FST98-A11963709
Articles are hosted by Taylor and Francis Online.
ALARA [Analytic and Laplacian Adaptive Radioactivity Analysis] v1.0,1,2 a new activation code released in January 1998 and developed specifically for the analysis of radioactivity in fusion energy systems, has been validated by comparison to other commonly used activation codes, FISPACT-973 and DKR-Pulsar 2.04 using the International Atomic Energy Agency [IAEA] Fusion Evaluated Nuclear Data Library [FENDL] Calculational Activation Benchmark.5 The solutions to the benchmark problem for both steady-state and pulsed operation have been calculated with all three programs on the same IBM RS/6000 workstation. In addition to comparing the total activity in each of the 44 non-void zones and the isotopic contributions to the activity at specific spatial points, the required computing time has been compared. For the steady state problem, agreement between ALARA and FISPACT-97 for the total activity was within 2.5% in all zones at all cooling times, and within 0.5% in most zones. For both the steady state and pulsed problem, agreement between ALARA and DKR-Pulsar 2.0 was within 1% in all zones and at all cooling times where tritium inventories were not significant. The agreement between ALARA and FISPACT-97 for the individual isotopic inventories in the stainless steel first wall back-plate were within 1% for all dominant isotopes at all cooling times, while the DKR-Pulsar 2.0 results showed some significant discrepancies. The processing time for ALARA is 2/3 of that for DKR-Pulsar 2.0 and less than 1/5 of that for FISPACT-97. This validation exercise proves that ALARA is an accurate and fast computational tool for the calculation of induced activity in fusion power systems.
