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
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
Aug 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
August 2024
Latest News
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
Donald Strominger and Gordon Schlesinger
Nuclear Science and Engineering | Volume 21 | Number 4 | April 1965 | Pages 441-450
Technical Paper | doi.org/10.13182/NSE65-A18788
Articles are hosted by Taylor and Francis Online.
Solid-state p-n junction counters have been fabricated to measure fission rates of materials with different fission thresholds. The fission reactions are caused by neutrons varying in energy from thermal energies for U235 to 1.5 MeV for Th232. The data gathered from these solid-state fission counters have been used to compare experimental with calculated fission rates in the AETR cores. The fission counter is assembled by placing an electroplated foil of a fissionable material near a p-n junction detector. An aluminum cap is placed over each detector and foil to form a neat, compact assembly. The resulting counter is small enough to fit inside a reactor with minimum distortion to the neutron spectrum. Fission counters employing Th232, U233, U234, U235, U236, U238, Np237, and Pu239 as the principal fissionable material have been successfully fabricated. These solid-state fission counters have proved reliable instruments to measure neutron fluxes in high gamma-ray fields. True fission events are easily separated from other induced reactions in the counter.