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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.
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2024 ANS Annual Conference
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Fusion Science and Technology
Latest News
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.
A. Iwamae, M. Atake, A. Sakaue, M. Yoshikawa, T. Kobayashi, K. Matama (19P11)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 244-246
Technical Paper | Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST07-A1363
Articles are hosted by Taylor and Francis Online.
This paper reports the results of the polarization measurements of emission lines from the plasma. The emission lines from helium atoms are polarized in a plasma produced with 2.45 GHz electron cyclotron resonance microwave at the plug-barrier region during EC discharge cleaning. The polarization direction is parallel to the magnetic field. This polarization direction indicates that the electron velocity distribution function is prolate or of a cigar-like shape. The emissions from OII and CIII ions in an ICH plasma at the central region are observed with the polarization separation optics.
