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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
ARPA-E announces $40 million to develop transmutation technologies for UNF
The Department of Energy’s Advanced Research Projects Agency–Energy (ARPA-E) announced $40 million in funding to develop cutting-edge technologies to enable the transmutation of used nuclear fuel into less-radioactive substances. According to ARPA-E, the new initiative addresses one of the agency’s core goals as outlined by Congress: to provide transformative solutions to improve the management, cleanup, and disposal of radioactive waste and spent nuclear fuel.
Wenqing Wu, Yongjun Wei, Jingwen Ba, Yan Shi
Fusion Science and Technology | Volume 61 | Number 1 | January 2012 | Pages 81-85
Technical Paper | doi.org/10.13182/FST12-A13340
Articles are hosted by Taylor and Francis Online.
Protium-deuterium isotope separation and tritium enrichment experiments have been carried out under the condition of a total reflux cycle using a continuous twin-bed hydrogen isotope separation technique, i.e., a twin-bed periodically counter-current flow technique. Two beds were packed with Pd and LaNi4.7Al0.3, which show positive and inverse isotope effects, respectively. The separation efficiency was studied experimentally in terms of stoichiometry between hydrogen and adsorbents, cycles, and extraction ratio. The experimental results show that a steady distribution of hydrogen isotopes along the axial direction can be obtained within an operating period of three cycles and a 10% extraction ratio at a moderate H/Pd atomic ratio. The results of a tritium enrichment experiment carried out under optimized conditions indicate that good enrichment efficiency is possible using this method to separate a three-component gas when the extraction ratio is kept small. Since the column used in this experiment is relatively short, there is great potential for this method for meeting the requirements of large-scale operations if long columns or multi-bed combined systems are employed.