ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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!
Latest Magazine Issues
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
November 2025
Nuclear Technology
Fusion Science and Technology
Latest News
Leak-tightness test on deck for SRS mega unit
The Savannah River Site in South Carolina will begin a leak-tightness test to qualify the megavolume Saltstone Disposal Unit (SDU) 10 to store up to 33 million gallons of solidified, decontaminated salt solution produced at the site.
Edward Fisher
Nuclear Science and Engineering | Volume 1 | Number 3 | July 1956 | Pages 222-238
Technical Paper | doi.org/10.13182/NSE56-A17854
Articles are hosted by Taylor and Francis Online.
The streaming of neutrons in narrow channels through thick shields is treated theoretically, using one-velocity diffusion theory. Scattering by the channel walls is evaluated, and it is shown how the entrance and exit of a channel affects its streaming current. The cases examined are the straight duct, gap, and annulus, offsets for the gap and annulus, and bends for the duct and gap. In all cases simple, approximate formulas are obtained.
