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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.
Kenan Ünlü, Dietrich H. Vincent
Nuclear Science and Engineering | Volume 110 | Number 4 | April 1992 | Pages 386-393
Technical Paper | doi.org/10.13182/NSE92-A23912
Articles are hosted by Taylor and Francis Online.
Helium trapping and release are studied for the nickel-rich amorphous alloys Ni75.1 Cr14.0-P10.1C0.08, Ni63.5Zr36.5, and Ni87.7P12.3. Helium-3 is introduced into the samples by implantation at 150-keV energy. The depth distribution of the implanted helium is observed by neutron depth profiling employing the reaction 3He(n, p)3H. Two implantation doses are used: 1 × 1016 and 5 × 1016 3He/cm . Both implantation doses were chosen to be low enough to avoid blistering or flaking of the surface of the samples. The helium release behavior of the samples is studied by taking depth profiles after each annealing stage. At the same time, electron diffraction is used on parallel samples to observe the microstructure of the samples as a function of annealing. The annealing sequence for each material is broken off when electron diffraction indicated the existence of relatively large crystals in a sample. Only a small fraction of the implanted helium is released in most cases, and a clear correlation between helium release and recrystallization can be found in only one case.
