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
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
UM conducts molten salt experiment
For 2,300 hours, the molten salt pump Shaft Seal Test Facility (SSTF) operated at the University of Michigan’s Thermal Hydraulics Laboratory, according to an article from UM. The large-scale experiment was designed to evaluate shaft seal performance in high-temperature pump systems. Fewer than 10 facilities worldwide have successfully operated fluoride or chloride salts for more than 100 hours using over 10 kilograms of material.
D. Graham Foster, Jr.
Nuclear Science and Engineering | Volume 8 | Number 2 | August 1960 | Pages 148-156
Technical Paper | doi.org/10.13182/NSE60-A25790
Articles are hosted by Taylor and Francis Online.
The age to indium resonance of nearly monoenergetic 0.97-Mev neutrons from spherical Na-γ-Be sources has been measured in water and kerosene. The age from a point source is inferred by extrapolation from measurements made with sources ¾ and ⅜ in. in diameter. The flux age is 13.9 ± 0.2 cm2 in water and 13.8 ± 0.2 cm2 in kerosene. Calculations by the moments method give 13.9 ± 0.1 cm2 in each medium, in excellent agreement with the measurements. The thermal migration area measured concurrently is 21.5 ± 0.4 cm2 in water and 20.6 ± 0.4 cm2 in kerosene. The migration area calculated from the resonance age is 22.2 ± 0.5 cm2 in water and 21.8 ± 0.5 cm2 in kerosene. Both of these are substantially larger than the measured values.
