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Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
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!
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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. B. Chilton
Nuclear Science and Engineering | Volume 21 | Number 2 | February 1965 | Pages 194-200
Technical Paper | doi.org/10.13182/NSE65-A21043
Articles are hosted by Taylor and Francis Online.
Backscattering factors, as fractions of the direct dose rate, are obtained for point sources of gamma radiation, specifically Cs137 and Co60, placed near a plane interface between vacuum and concrete. The method is based on the application of albedo principles, using the Chilton-Huddleston formulation for albedo. The results are considered practically applicable to air-concrete or air-ground interface situations, provided the source-detector, source-interface, and detector-interface distances are within certain limits. The lower limit is in theory the order of a mean free path of the source radiation in concrete, although under certain circumstances the present results are valid for distances even less. The upper limit appears to be on the order of a few dozen feet, but further precise experimental work is needed to establish this.
