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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.
Y. S. Horowitz, M. Moscovitch, J. M. Mack, H. Hsu, E. Kearsley
Nuclear Science and Engineering | Volume 94 | Number 3 | November 1986 | Pages 233-240
Technical Paper | doi.org/10.13182/NSE86-A17266
Articles are hosted by Taylor and Francis Online.
Electron Monte Carlo calculations using CYLTRAN and a new PHSECE (Photon-Produced Secondary Electrons) technique were carried out to estimate electron fluences and energy deposition profiles near LiF/Al and LiF/Pb material interfaces undergoing 60Co gamma irradiation. Several interesting and new features emerge: (a) although the buildup of the secondary electron fluences at the interfaces of the irradiated media is approximately exponential, the value of the electron mass fluence buildup coefficient, γ, is not equal to the electron mass fluence attenuation coefficient, β;(b) the β value of the attenuation of the gamma generated electron fluences at the cavity/medium interfaces is strongly dependent on the Z of the adjacent material; and (c) for LiF/Pb there is a significant “intrusion” energy deposition mode arising from sidescattering in the wall material (lead). These new features of interface dosimetry (at least items a and b) are incorporated into the photon general cavity expressions of Burlin (as modified by Horowitz, Dubi, and Moscovitch) and Kearsley and compared with experimental data.
