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
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Shin Nishimura, Hideo Sugama, Yuji Nakamura
Fusion Science and Technology | Volume 51 | Number 1 | January 2007 | Pages 61-78
Technical Paper | Stellarators | doi.org/10.13182/FST07-A1288
Articles are hosted by Taylor and Francis Online.
Methods to obtain monoenergetic viscosity coefficients by combining analytical approximations of the linearized drift kinetic equation are studied for a previously formulated full neoclassical transport matrix in general nonsymmetric toroidal plasmas. A unified analytical treatment of two coefficients due to the non-bounce-averaged radial drifts of guiding centers is shown. These coefficients were previously obtained by a direct numerical calculation of the kinetic equation in the three-dimensional (3-D) phase-space (pitch-angle, poloidal and toroidal angles). In a present study, the radial drift term in the equation is divided into three parts, and then the perturbed distribution and the resulting monoenergetic coefficients are expressed by superposed components, which can be calculated by combining analytical methods. An analytical expression for the boundary layer correction to the parallel viscosity in the 1/ regime also is newly derived to complete the full matrix without a numerical calculation in 3-D phase-space. Analytical results given by adding these components approximately reproduce results of the direct numerical calculation of the kinetic equation.