ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
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!
Latest Magazine Issues
Aug 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
August 2025
Latest News
IAEA program uses radioisotopes to protect rhinos
After two years of testing, the International Atomic Energy Agency and the University of the Witwatersrand in Johannesburg, South Africa, have begun officially implementing the Rhisotope Project, an innovative effort to combat rhino poaching and trafficking by leveraging nuclear technology.
Pengbo Zhang, Ruihuan Li, Chong Zhang, Jijun Zhao
Fusion Science and Technology | Volume 66 | Number 1 | July-August 2014 | Pages 106-111
Technical Paper | doi.org/10.13182/FST13-746
Articles are hosted by Taylor and Francis Online.
The preferential site, segregation and embrittlement properties of hydrogen (H) in a vanadium (V) &Sgr;3 (111) [110] grain boundary (GB) were investigated by first-principles calculations. The solution and segregation energy of H at different interstitial and substitutional sites are calculated. Energetically, H prefers to occupy the GB space rather than substitutional sites and can segregate to the GB with segregation energy of −0.08 eV. Hydrogen is an embrittler at the GB by producing an embrittlement energy of about 0.41 eV, in agreement with experimental observations. Charge density distributions indicate that there are no strong chemical bonds between an H atom and the adjacent V atoms in the GB, and the presence of H atom weakens the bond strength between surrounding V atoms.
