ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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May 2025
Latest News
DTE Energy studying uprate at Fermi-2, considers Fermi-3’s prospects
DTE Energy, the owner of Fermi nuclear power plant in Michigan, is considering an extended uprate for Unit 2 that would increase its 1,100-MW generation capacity by 150 MW.
J. Schlösser
Nuclear Science and Engineering | Volume 24 | Number 2 | February 1966 | Pages 123-132
Technical Paper | doi.org/10.13182/NSE66-A18297
Articles are hosted by Taylor and Francis Online.
A model of parallel capillaries with different diameters has been developed to explain back-diffusion experiments on four rather different graphites both impregnated and unimpregnated. The transport phenomenon has been taken as an interaction between diffusional and molecular flow on one hand, and viscous and slip flow on the other, to cover the whole range of diameter to mean-free-path ratios possible in graphite. It can be shown that only by assuming at least three bundles of capillaries with different diameters can these experiments be adequately explained. It is further possible to relate the material constants, the viscous flow component B0, and the slip flow component K0 to the pore-size distribution obtained. When we consider the complexity of porous capillaries in graphite, the agreement is found to be good, about 30%.
