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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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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Christmas Night
Twas the night before Christmas when all through the houseNo electrons were flowing through even my mouse.
All devices were plugged in by the chimney with careWith the hope that St. Nikola Tesla would share.
M. Arita, H. Obata, T. Hayashi, K. Okuno, W.M. Shu, Y. Hayashi
Fusion Science and Technology | Volume 28 | Number 3 | October 1995 | Pages 1132-1137
Tritium Properties and Interaction with Material | Proceedings of the Fifth Topical Meeting on Tritium Technology In Fission, Fusion, and Isotopic Applications Belgirate, Italy May 28-June 3, 1995 | doi.org/10.13182/FST95-A30559
Articles are hosted by Taylor and Francis Online.
Ion-driven permeation of deuterium was studied through an iron (0.1 mm thickness) coated with a SiO2 of about 30 nm thick. A flux ratio of permeation/incident for the Fe sample ranged from 7.6 × 10−5 at 373 K to 1.4 × 10−3 at 673 K for the incident ion flux of 6.4 × 10−18 ions m−2S−1 at the ion energy of 0.3 keV. The permeation flux through the back coated sample is lowered by a factor of 1 or 2 orders of magnitude than the case of the Fe sample. The activation energy(0.2eV) of the permeation of these two samples are almost same. As for the front coated sample, the different energy and incident ion flux dependences were observed. Investigations of the SiO2 coating property under deuterium ion implantation by XPS showed that the coating on the front surface could easily sputtered away during the experiments. Thus, the surface after removing of the coating has a special condition that changes the properties of permeation.