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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
Yigal Ronen, Melvin J. Leibson
Nuclear Technology | Volume 79 | Number 1 | October 1987 | Pages 20-34
Technical Paper | Fission Reactor | doi.org/10.13182/NT87-A16002
Articles are hosted by Taylor and Francis Online.
In the multispectrum high convertor pressurized water reactor, the core is divided into several regions with a different moderator-to-fuel (M/F) volume ratio specified in each region. This results in a variation of the neutron spectrum in the reactor. As the average M/F ratio is low (tight-lattice configuration), the resulting spectrum in the reactor is hard and a high conversion ratio can thus be achieved. In addition, the difference in the M/F ratio allows for a better negative reactivity void response as compared to a similar monospectrum reactor. Analysis and optimization of such a reactor concept are presented and discussed.
