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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
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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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Latest News
NuScale Energy Exploration Center opens at George Mason University
NuScale Power Corporation has opened another Energy Exploration (E2) Center—this one at George Mason University in Arlington, Va. Just last month, a NuScale E2 Center opened at South Carolina State University in Orangeburg, S.C. The newest E2 at George Mason is the company’s 11th center.
Yuji Ishiguro
Nuclear Technology | Volume 61 | Number 1 | April 1983 | Pages 121-126
Technical Note | Fuel Cycle | doi.org/10.13182/NT83-A33150
Articles are hosted by Taylor and Francis Online.
A new concept of fueling a liquid-metal fast breeder reactor (LMFBR) is proposed with the aims of increasing the resource base of nuclear energy for the generation of electricity and of resolving the safety question of current LMFBRs. The basic feature of the concept is the use of 233U/Th fuel in a central part of the LMFBR core and Pu/U fuel in the outer core. The reactor is flexible in its utilization of nuclear fuels and can be an efficient breeder reactor with either the uranium or the thorium cycle. The safety characteristics of the reactor are superior to those of plutonium-fueled LMFBRs of current designs with the sodium-void reactivities being negative almost everywhere in the core. The design and thermal characteristics of the proposed pins indicate that in the 233U/Th-fueled inner core, thick soft-spectrum pins can be advantageous over solid pins of a more conventional type.