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
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
Judge temporarily blocks DOE’s move to slash university research funding
A group of universities led by the American Association of Universities (AAU) acted swiftly to oppose a policy action by the Department of Energy that would cut the funds it pays to universities for the indirect costs of research under DOE grants. The group filed suit Monday, April 14, challenging a what it termed a “flagrantly unlawful action” that could “devastate scientific research at America’s universities.”
By Wednesday, the U.S. District Court judge hearing the case issued a temporary restraining order effective nationwide, preventing the DOE from implementing the policy or terminating any existing grants.
Kohtaro Ueki, Masayoshi Kawai
Nuclear Technology | Volume 132 | Number 2 | November 2000 | Pages 281-289
Technical Paper | Radiation Protection | doi.org/10.13182/NT00-A3144
Articles are hosted by Taylor and Francis Online.
The 14-MeV neutron streaming experiment with three straight ducts is analyzed with the cell flagging technique of the MCNP code. The contributions of neutrons passing through the flagging cell located at the duct inlet and entering the detectors located in the duct are identified quantitatively. Furthermore, the streaming paths of neutrons entering in the duct inlet are cleared by the analysis.As an application of the cell flagging technique, a neutron streaming system with two-bend cylindrical duct in a thick concrete shield is prepared, and the flagging cells are located around the duct. The contributions of neutrons passing the flagging cells to the detector located at the duct outlet are cleared, and effective compensation shields to reduce the neutron dose-equivalent rate at the duct outlet are obtained by replacing some of the flagging cells with the NS-4-FR shield. Moreover, it is expected that the equilibrating contribution from each flagging cell to the dose-equivalent rate at the duct outlet is the essential function to make an effective compensation shielding system with neutron streaming.