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.
Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
Ariz. governor vetoes “fast track” bill for nuclear
Gov. Katie Hobbs put the brakes on legislation that would have eliminated some of Arizona’s regulations and oversight of small modular reactors, technology that is largely under consideration by data centers and heavy industrial power users.
J. B. Czirr, M. L. Stelts
Nuclear Science and Engineering | Volume 52 | Number 3 | November 1973 | Pages 299-309
Technical Paper | doi.org/10.13182/NSE73-A19477
Articles are hosted by Taylor and Francis Online.
As part of a continuing program to accurately measure neutron capture cross sections, we have obtained data for 165Ho and 197Au in the 167-eV to 0.6-MeV energy range. All capture reactions are measured relative to the fission rate of 235U for neutron energies above 800 eV and to the 10B(n, αo + α1) reaction below 13 keV. In addition, current best estimates of σF(235U) and σn,α(10B) are used to convert these ratios to up-to-date capture cross sections. The 3.9-eV “black resonance” of 165Ho is used to normalize all cross sections.
