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
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
July 2025
Fusion Science and Technology
Latest News
Nuclear fuel cycle reimagined: Powering the next frontiers from nuclear waste
In the fall of 2023, a small Zeno Power team accomplished a major feat: they demonstrated the first strontium-90 heat source in decades—and the first-ever by a commercial company.
Zeno Power worked with Pacific Northwest National Laboratory to fabricate and validate this Z1 heat source design at the lab’s Radiochemical Processing Laboratory. The Z1 demonstration heralded renewed interest in developing radioisotope power system (RPS) technology. In early 2025, the heat source was disassembled, and the Sr-90 was returned to the U.S. Department of Energy for continued use.
Katsumi Hayashi, Hideo Hirayama, Kohei Iwanaga, Kenjiro Kondo, Seishiro Suzuki
Nuclear Science and Engineering | Volume 198 | Number 2 | February 2024 | Pages 207-227
Research Article | doi.org/10.1080/00295639.2023.2204974
Articles are hosted by Taylor and Francis Online.
The pinhole gamma camera is a simple and useful device for determining the radiation distribution in a certain region. Using this device, we developed a method to measure the distribution of 137Cs contamination density on surfaces using the total energy absorption peak count rate of gamma rays, where each camera pixel was projected onto the surface to determine the corresponding measured area and distance to the surface. We applied this method to measure the 137Cs contamination density of the wall, ceiling, and floor of the Unit 2 Operation Floor at the Fukushima Daiichi Nuclear Power Station in 2020 and 2022 and compared the results obtained in 2020 to those of a robot-operated, conventional, high-dose-area smear test. We found a pinhole gamma camera with the proposed method is useful for obtaining contamination density distribution results quickly, without the complexities of using a robot.
