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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!
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Latest News
A wave of new U.S.-U.K. deals ahead of Trump’s state visit
President Trump will arrive in the United Kingdom this week for a state visit that promises to include the usual pomp and ceremony alongside the signing of a landmark new agreement on U.S.-U.K. nuclear collaboration.
Edward E. Carroll, Jr., Robert W. Stooksberry
Nuclear Science and Engineering | Volume 20 | Number 4 | December 1964 | Pages 455-461
Technical Paper | doi.org/10.13182/NSE64-A20987
Articles are hosted by Taylor and Francis Online.
A measurement of the thermal neutron extrapolation length from a semi-infinite slab of pure water has been made using a mock plane-thermal-neutron source. The result is δ = 0.35 ± 0.03 cm, in agreement with calculations, which range from about 0.30 to 0.35 cm, but disagreeing with results inferred from pulsed neutron source experiments in small geometries, which range from about 0.40 to 0.50 cm.
