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
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
May 2025
Nuclear Technology
April 2025
Fusion Science and Technology
Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Hans Jordan, Philip M. Schumacher, Vladimir Kogan
Nuclear Technology | Volume 72 | Number 2 | February 1986 | Pages 148-157
Technical Paper | Nuclear Safety | doi.org/10.13182/NT86-A33737
Articles are hosted by Taylor and Francis Online.
A two-component aerosol system is investigated using the MSPEC code, which models the dynamic behavior of particle composition as a function of particle size. The predicted aerosol concentration behavior is shown to be sensitive to several parameters and model choices, in contrast to the situation for singlecomponent aerosol systems, where these parameters and models appear to play a distinctly uncritical role. In addition, the predicted aerosol concentration behavior is shown to significantly diverge from that predicted by MSPEC using a “single-component” model mode that assumes uniform particle composition across the size distribution. This latter mode is common to codes presently used for nuclear accident source term evaluations. These findings point to the need for an expanded experimental data base, both to validate multiple-component aerosol behavior codes and to supply the necessary data to drive them.
