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This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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China starts construction on 2 reactors
Construction formally began this week on two new nuclear reactors in China.
The China National Nuclear Corporation held a ground-breaking ceremony to mark the first phase of construction of the Jinqimen nuclear power plant in the eastern province of Zhejiang.
S. O. Kucheyev, J. M. Lenhardt
Fusion Science and Technology | Volume 73 | Number 3 | April 2018 | Pages 293-297
Technical Paper | doi.org/10.1080/15361055.2017.1392205
Articles are hosted by Taylor and Francis Online.
Liquid hydrogen confined in pores of nanofoams crystallizes at lower temperatures than in the unconfined, bulk state. Here, we summarize results of our recent systematic relaxation calorimetry studies of the liquid–solid phase transition of hydrogen and deuterium in various materials with open-cell pores. These include spinodal-decomposition-derived silica glasses and nanoporous gold, conventional silica aerogels, and carbon foams with ligaments made from nanotubes and graphene sheets, all of which were studied previously. We present new hydrogen thermoporometry data for polymeric norbornene-based aerogels. Results show that hydrogen freezing temperatures inside all the porous materials studied are depressed. The average depression of the freezing point scales linearly with the ratio of the internal surface area to the pore volume. The average freezing point depression is limited to ≲1.6 K for foams with monolith densities ≲50 mg·cm. Details of the freezing behavior, however, depend nontrivially on the choice of the porous material and on the hydrogen-filling fraction, reflecting phenomena that are beyond the Gibbs-Thomson formalism and pointing to the complexity of pore architectures in the low-density materials of interest to thermonuclear fusion energy applications.