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Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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Fusion Science and Technology
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Glass strategy: Hanford’s enhanced waste glass program
The mission of the Department of Energy’s Office of River Protection (ORP) is to complete the safe cleanup of waste resulting from decades of nuclear weapons development. One of the most technologically challenging responsibilities is the safe disposition of approximately 56 million gallons of radioactive waste historically stored in 177 tanks at the Hanford Site in Washington state.
ORP has a clear incentive to reduce the overall mission duration and cost. One pathway is to develop and deploy innovative technical solutions that can advance baseline flow sheets toward higher efficiency operations while reducing identified risks without compromising safety. Vitrification is the baseline process that will convert both high-level and low-level radioactive waste at Hanford into a stable glass waste form for long-term storage and disposal.
Although vitrification is a mature technology, there are key areas where technology can further reduce operational risks, advance baseline processes to maximize waste throughput, and provide the underpinning to enhance operational flexibility; all steps in reducing mission duration and cost.
S. Kakimoto, H. Kano, M. Ichimura, H. Higaki, S. Saosaki, Y. Yamaguchi, H. Hojo, T. Watanabe, K. Yatsu
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 86-88
Heating | doi.org/10.13182/FST03-A11963569
Articles are hosted by Taylor and Francis Online.
In GAMMA 10, plasma was generated and heated by conventional ICRF systems (RF1, RF2). RF3 system with the 10th harmonic ion cyclotron frequency near the midplane of the central cell was applied for the high-density plasma generation. At the same time, a plasma heating by RF3 was observed. Wave damping was calculated by using the hot plasma distribution in infinite and homogeneous plasma. It is clearly seen the high-energy component is important for the damping of high harmonic fast waves. The experimental observations in GAMMA 10 suggest the existence of high-energy tail in the energy distribution of ions.
