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
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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.
A. E. Profio, J. D. Eckard
Nuclear Science and Engineering | Volume 19 | Number 3 | July 1964 | Pages 321-328
Technical Paper | doi.org/10.13182/NSE64-A20965
Articles are hosted by Taylor and Francis Online.
The slowing-down times in water, toluene, and heavy water were obtained from measurements of capture-gamma-ray counting rates as a function of time after injection of a neutron burst. The times to the 1.46-eV resonance in indium were 0.75 ± 0.5 μsec, 1.5 ± 0.3 μsec, and 4.0 ± 1.0 μsec for the three moderators. The corresponding times to a 0.4-eV energy in cadmium were 1.75 ± 0.5 μsec, 3.25 ± 0.3 μsec, and 10.5 ± 1.0 μsec, respectively. Time-gated pulse-height spectra measurements in a large liquid scintillation detector were made to separate fast- from thermal-neutron interactions by taking advantage of slowing-down-time spectrometry. Steady-state pulse-height spectra measurements in water and in water plus indium illustrated the application of prompt-gamma-ray analysis to determination of capture rates.
