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
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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
DOE issues final RFQ for WIPP clean energy initiative
The Department of Energy’s Office of Environmental Management has issued a request for qualifications for interested parties and prospective offerors looking to enter into a realty agreement for carbon-pollution-free electricity (CFE) projects at the department’s Waste Isolation Pilot Plant site in southeastern New Mexico.
Kenji Kotoh, Kazuhiko Kudo
Fusion Science and Technology | Volume 52 | Number 4 | November 2007 | Pages 995-1001
Technical Paper | Tritium, Safety, and Environment | doi.org/10.13182/FST07-A1624
Articles are hosted by Taylor and Francis Online.
Although the method of adsorption using synthetic zeolites has been applied to the systems of removal or/and recovery of tritiated water vapor from tritium handling atmospheres or process gases, the dynamic behavior of hydrogen-isotopic water molecules in zeolites is not yet sufficiently elucidated because the interaction between strongly polarized water molecules and zeolite crystalline surfaces is complicated. Considering the basic definition of mass transfer with the chemical potential gradient as driving force for diffusion, we obtained an expression of diffusivity depending on temperature and concentration, derived from the characteristics of adsorption equilibrium as a function of adsorption potential, where the diffusivity is described in relation to the mobility corrected here by deriving a term of activation energy.Experimental diffusion coefficients for tracer HTO in H2O adsorbed in zeolite crystals, measured under various conditions of temperature and vapor pressure, indicate a variety of values. The variety, however, can be clearly interpreted in accordance with this expression.