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Division Spotlight
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.
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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Latest News
DOE issues RFI for a spent fuel consolidated interim storage facility
The Department of Energy’s Office of Nuclear Energy has issued a request for information opportunity for the design and construction of a federal consolidated interim storage facility (CISF) for spent nuclear fuel. The DOE is planning on establishing a federal CISF to manage SNF until a permanent repository is available. In May, the DOE received initial approval, known as “Critical Decision-0,” for such a facility.
The deadline for submissions is September 5.
H. Alan Robitaille, John S. Hewitt
Nuclear Science and Engineering | Volume 63 | Number 4 | August 1977 | Pages 391-400
Technical Paper | doi.org/10.13182/NSE77-A27056
Articles are hosted by Taylor and Francis Online.
The spectrum of neutrons in thermal pseudo-equilibrium with a mixture of partially hydrogenated terphenyls and high-boiling polymers, an organic material known commercially as HB40, has been measured at room temperature. The spectrum was measured in each of seven mixtures of HB40 and a thermal-neutron absorber, trimethyl borate, in various concentrations. The spectra were determined by the time-of-flight method using the University of Toronto linear electron accelerator as a pulsed source of fast neutrons. These spectra were compared with those calculated using several different bound-hydrogen approximations to the actual energy transfer kernel for the mixture. Of these approximations, the best agreement between theory and experiment occurred for a scattering kernel derived using the diphenyl and the polyethylene scattering kernels, combined according to a weighting scheme reflecting the degree of hydrogenation of the organic material.