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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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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
Taking shape: Fusion energy ecosystems built with public-private partnerships
It’s possible to describe fusion in simple terms: heat and squeeze small atoms to get abundant clean energy. But there’s nothing simple about getting fusion ready for the grid.
Private developers, national lab and university researchers, suppliers, and end users working toward that goal are developing a range of complex technologies to reach fusion temperatures and pressures, confounded by science and technology gaps linked to plasma behavior; materials, diagnostics, and electronics for extreme environments; fuel cycle sustainability; and economics.
Masanori Hara, Miki Shoji, Tsukasa Aso
Fusion Science and Technology | Volume 76 | Number 3 | April 2020 | Pages 163-169
Technical Paper | doi.org/10.1080/15361055.2019.1661720
Articles are hosted by Taylor and Francis Online.
Liquid scintillation counters (LSCs) have been widely used for low-level tritium measurements. To obtain an accurate tritium activity using a LSC, a quenching correction is required. The quenching occurs from interruptions to the scintillation process (chemical quenching) and by absorption of scintillation photons by colored substances (color quenching). There is no common method for the correction of color quenching. Here, two-dimensional (2-D) scintillation spectra were measured with a conventional LSC connected to an external multichannel analyzer. The LSC had two photomultiplier tubes (PMTs). A 2-D spectrum was constructed from pulse heights from both PMTs. In a less-quenching cocktail, the 2-D scintillation spectra extended along a 45-deg line. However, the shape of the spectrum broadened with increasing color quenching and thus gave information about the color quenching. The effect of color quenching was qualitatively less significant in the relationship between the tritium counting efficiency and the quenching index parameter.