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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
Latest News
Joint NEA project performs high-burnup test
An article in the OECD Nuclear Energy Agency’s July news bulletin noted that a first test has been completed for the High Burnup Experiments in Reactivity Initiated Accident (HERA) project. The project aim is to understand the performance of light water reactor fuel at high burnup under reactivity-initiated accidents (RIA).
A. N. Golubkov, A. A. Kononenko, A. A. Yukhimchuk
Fusion Science and Technology | Volume 48 | Number 1 | July-August 2005 | Pages 527-533
Technical Paper | Tritium Science and Technology - Materials Interaction and Permeation | doi.org/10.13182/FST05-A981
Articles are hosted by Taylor and Francis Online.
Hydrogen isotopes sources with pressure up to several thousand atmospheres are required to pursue some investigations in nuclear and thermonuclear processes. Investigations are performed in mixtures of all three hydrogen isotopes. Stringent requirements are placed on such sources. Primarily, this is reliability and safety, purity of supplied gas, possibility of smooth pressure control, minimal dimensions and the ease to operate. Vanadium-base thermodesorption sources meet these requirements. Literature data on equilibrium pressures of hydrogen isotopes desorption over vanadium dihydride phase have been reviewed. It has been shown that in data analysis, gas nonideality at high pressure should be taken into account. In particular, when showing temperature dependencies of desorption equilibrium pressures it is reasonable to use appropriate value of fugacity. The paper presents temperature dependencies of protium and deuterium fugacity over corresponding dihydride vanadium phases in the range of 300-635K, determined using experimental data of the authors. Temperature dependence of tritium fugacity over dihydride vanadium phase at 273-483K determined using experimental data of the authors and available literature data are also presented. A series of vanadium-base thermodesorption high-pressure hydrogen isotopes sources have been developed in RFNC-VNIIEF using of the obtained dependencies. Schemes of sources for research in fundamental science are presented.