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.
Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
Apr 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
May 2024
Nuclear Technology
Fusion Science and Technology
Latest News
College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Donghua Xu, Brian D. Wirth
Fusion Science and Technology | Volume 56 | Number 2 | August 2009 | Pages 1064-1068
Fusion Materials | Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 2) | doi.org/10.13182/FST09-A9052
Articles are hosted by Taylor and Francis Online.
Helium effects are among the most critical subjects in fusion materials research. A major task in the study of He effects is to understand how He interacts with irradiation-induced and/or inherent defects and how the interactions govern the subsequent microstructural evolution. Thermal desorption spectrometry (TDS) provides an appropriate platform for both experimentally probing the kinetics and energetics of He-defect interactions and computationally validating the parameterization of rate theory models. In this paper we present preliminary results on the spatially dependent rate theory modeling of TDS of He-implanted single crystalline iron under the same conditions as explored in our recent experiments. Included in the present model are previously reported migration energies for self-interstitial-atom (SIA), di-SIA and interstitial He from ab initio calculations, and binding energies of HexVy, Vm and In clusters from thermodynamic calculations or ab initio based extrapolations. With a small amount of parameter optimization, several major features observed in the experimental TDS spectra have been reasonably reproduced by the model, while further and more complete validation through both experiments and computation remains to be carried out.