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
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting 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!
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Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
NRC cuts fees by 50 percent for advanced reactor applicants
The Nuclear Regulatory Commission has announced it has amended regulations for the licensing, inspection, special projects, and annual fees it will charge applicants and licensees for fiscal year 2025.
P. F. Nichols
Nuclear Science and Engineering | Volume 7 | Number 5 | May 1960 | Pages 395-399
Technical Paper | doi.org/10.13182/NSE60-A25736
Articles are hosted by Taylor and Francis Online.
A direct measurement of the graphite absorption cross section has been made in the Physical Constants Testing Reactor (PCTR). The sample tested was reactor grade (GBF) graphite, and had a 2200 m/sec absorption cross section of 3.80 ± 0.04 mb including all impurities. This measurement also provides a normalization for the Hanford Test Reactor relative measurement which have been in progress for over fifteen years. Samples of American, French, and British graphite were also tested in the HTR to provide a basis for comparing the results of American, British, and French graphite absorption cross-section measurements. The graphite bars involved have also been tested at Harwell and Saclay.
