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
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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.”
Saber Azam, Anil Kumar
Fusion Science and Technology | Volume 17 | Number 3 | May 1990 | Pages 452-465
Technical Paper | Blanket Engineering | doi.org/10.13182/FST90-A29220
Articles are hosted by Taylor and Francis Online.
The objective of the LOTUS experimental program, started in 1983, is to perform various integral neutronics measurements like neutron spectrometry, activation, and tritium breeding ratio (TBR) on fusion reactor blanket concepts. The first blanket concept studied at the LOTUS facility was the fission-suppressed type. Investigations of pure fusion blanket concepts constitute a logical continuation of this program. The new LOTUS fusion blanket concept employs a eutectic of lithium and lead, for example, 17L-83Pb, and lithium-metal as tritum breeders. The blanket consists of a first wall of low-activation ferritic steel, followed by zones of 17Li-83Pb, 6Li, and a reflector made of graphite or silicon carbide (SiC). The choice of structural material for each zone is based on its compatibility with the primary zonal component. Vanadium alloy (V-15 Cr-5 Ti), low-activation ferritic steel (Fe-11 Cr-2.5 W-0.3 V-0.15 C), and the same vanadium alloy were retained for 17Li-83Pb, 6Li, and graphite or SiC zones, respectively. One-dimensional ANISN calculations have been carried out for the optimization of the blanket dimensions. The main criteria for the optimization calculations are a TBR >1.1 and a compact blanket. An experimental module composed of lead and lithium pellets is proposed to simulate various eutectic compositions. Natural lithium, clad in aluminum, is used due to economic considerations. There are some important differences in the experimental module with respect to the optimized concept, which are mainly related to the location of the 14-MeV neutron source outside the blanket. Foil activation, TBR measurements using novel and conventional techniques, and spectrum measurements employing mini NE-213 and, possibly, NE-230 form the bulk of the experimental program.