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
Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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
Feb 2025
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
March 2025
Nuclear Technology
Fusion Science and Technology
February 2025
Latest News
Candidates for leadership provide statements: ANS Board of Directors
With the annual ANS election right around the corner, American Nuclear Society members will be going to the polls to vote for a vice president/president-elect, treasurer, and members-at-large for the Board of Directors. In January, Nuclear News published statements from candidates for vice president/president-elect and treasurer. This month, we are featuring statements from each nominee for the Board of Directors.
Kanji Tasaka
Nuclear Technology | Volume 29 | Number 2 | May 1976 | Pages 239-248
Analysis | doi.org/10.13182/NT76-A31583
Articles are hosted by Taylor and Francis Online.
A method has been developed to estimate the irradiation history and burnup of a spent fuel by gamma-ray spectroscopy. The gamma-ray spectrum, measured by using a Ge(Li) detector, is analyzed by the standard spectrum method to obtain the activity of the fission product. The irradiation history is fitted by the least-squares method to reproduce the activity of each fission-product nuclide. For this purpose, the irradiation history is divided into several time intervals and the contribution of each interval to the production of each fission product is calculated analytically by repeatedly using the Bateman equation. The method was successfully applied to the Materials Testing Reactor-type fuel element irradiated in the core of Japan Research Reactor-4 for about four years.
