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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Powering the future: How the DOE is fueling nuclear fuel cycle research and development
As global interest in nuclear energy surges, the United States must remain at the forefront of research and development to ensure national energy security, advance nuclear technologies, and promote international cooperation on safety and nonproliferation. A crucial step in achieving this is analyzing how funding and resources are allocated to better understand how to direct future research and development. The Department of Energy has spearheaded this effort by funding hundreds of research projects across the country through the Nuclear Energy University Program (NEUP). This initiative has empowered dozens of universities to collaborate toward a nuclear-friendly future.
Donald L. Smith, Manuel M. Bretscher, J. W. Meadows
Nuclear Science and Engineering | Volume 78 | Number 4 | August 1981 | Pages 359-369
Technical Paper | doi.org/10.13182/NSE81-A21369
Articles are hosted by Taylor and Francis Online.
Cross sections for the 7Li(n,n't)4He reaction have been measured in the 7- to 9-MeV energy range. The tritium produced in encapsulated lithium metal samples by fast neutron bombardment was extracted and the activity measured using liquid scintillation counting techniques. The neutron fluence was measured with an ion chamber containing a 238U deposit. This deposit was calibrated by comparing it with standard 235U deposits. As a result, the error in the (n,n't) cross section is insensitive to the 238U fission cross-section error but does depend directly on the error in the 235U fission cross section. The experimental results show that the 7Li(n,n't)4He cross section is very insensitive to neutron energy in the 7- to 9-MeV range, and the value 372 mb (±3.8%) was obtained for the average cross section in this region.
