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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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.
K. Wisshak, F. Käppeler
Nuclear Science and Engineering | Volume 69 | Number 1 | January 1979 | Pages 47-54
Technical Paper | doi.org/10.13182/NSE79-A21284
Articles are hosted by Taylor and Francis Online.
The subthreshold fission cross section of 240Pu was measured in the energy range from 10 to 250 keV, using 235U as a standard. Neutrons were produced via the 7Li(p,n) and T(p,n) reaction with the Karlsruhe 3-MV pulsed Van de Graaff accelerator. Fission events were registered by detecting fission neutrons with an NE-213 liquid scintillator with pulse-shape discriminator equipment. The high neutron flux available at flight paths of ∼67 and 135 mm allowed for a statistical accuracy of 1 to 3% together with a moderate energy resolution of ∼10 to 20 ns/m. The overall accuracy achieved is between 7 and 9%. The data show a distinct structure in the cross section, as indicated by poor statistics in previous measurements.
