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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.
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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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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.
R. Böttger, H. Klein, A. Chalupka, B. Strohmaier
Nuclear Science and Engineering | Volume 106 | Number 3 | November 1990 | Pages 377-398
Technical Paper | doi.org/10.13182/NSE90-A29065
Articles are hosted by Taylor and Francis Online.
A precision multidetector neutron time-of-flight (TOF) spectrometer and low-mass paral-lel-plate ionization chambers with a 252Cf deposit on the inner electrode are used to measure the spectral fluence of neutrons from the spontaneous fission of 252Cf in the 2- to 14-MeV energy range. Various methodological problems are carefully investigated. The influence of anisotropic efficiency in detecting the fission fragments is determined experimentally and numerically. Formulas are derived for an iterative analysis of the measured TOF spectra taking into account an inverted time scale and a nonextended dead time in the stop chain. On the basis of calculated neutron detection efficiencies, which were recently confirmed by n-p scattering experiments and proton recoil telescope measurements, it was possible to extract the spectral fluence of fission neutrons in absolute scale. The experimental data show significant deviations from a Maxwellian distribution with an energy parameter E0 = 1.42 MeV, but reasonable agreement can be achieved with cascade evaporation model calculations.
