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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Penn State and Westinghouse make eVinci microreactor plan official
Penn State and Westinghouse Electric Company are working together to site a new research reactor on Penn State’s University Park, Pa., campus: Westinghouse’s eVinci, a HALEU TRISO-fueled sodium heat-pipe reactor. Penn State has announced that it submitted a letter of intent to host and operate an eVinci reactor to the Nuclear Regulatory Commission on February 28 and plans to engage with the NRC on specific siting decisions. Penn State already boasts the Breazeale reactor, which began operating in 1955 as the first licensed research reactor at a university in the United States. At 70, the Breazeale reactor is still in operation.
H. Hurwitz, Jr., M. S. Nelkin, G. J. Habetler
Nuclear Science and Engineering | Volume 1 | Number 4 | August 1956 | Pages 280-312
Technical Paper | doi.org/10.13182/NSE56-A18603
Articles are hosted by Taylor and Francis Online.
The approximation of a heavy gaseous moderator is used as an illustrative example for the discussion of calculational methods in the thermal and epithermal energy regions. The energy distribution and migration area of neutrons in a infinite homogeneous medium are calculated numerically for 1/ν absorption. Semianalytic expressions are obtained for the case of weak absorption. Finally, an expression for the slowing-down density is given and its significance for the modification of age-diffusion theory to include the thermal motion of the moderator is discussed.
