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
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
Mar 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
April 2024
Nuclear Technology
Fusion Science and Technology
February 2024
Latest News
Why should safeguards by design be a global effort?
Jeremy Whitlock
I can’t think of a more exciting time to be working in nuclear, with the diversity of advanced reactor development and increasing global support for nuclear in sustainable energy planning. But we can’t lose sight of the need to plan for efficient international safeguards at the same time.
Global nuclear deployment has been underpinned since 1970 by the Treaty on the Non-Proliferation of Nuclear Weapons (NPT), making it a key customer requirement for governments to demonstrate unequivocally that the technology is not being misused for weapons development.
The International Atomic Energy Agency (IAEA) has helped verify this commitment for more than 50 years, but it has never safeguarded many of the advanced reactors (and related fuel cycle processes) being developed today.
Yury Verzilov, Kentaro Ochiai, Takeo Nishitani
Fusion Science and Technology | Volume 48 | Number 1 | July-August 2005 | Pages 650-653
Technical Paper | Tritium Science and Technology - Materials Interaction and Permeation | doi.org/10.13182/FST05-A1009
Articles are hosted by Taylor and Francis Online.
Direct and indirect methods have been developed for measurements of tritium production rates on different Li isotopes. The methods are mainly intended for design-oriented blanket experiments and are based on the activation of thin diagnostic pellets. In the direct method, the tritium activity bred from Li isotopes can be evaluated separately using two activated Li-containing pellets, measured by liquid scintillation counting. The method allows precise measurements of tritium activity in the pellet at a level of 2 Bq/g. The indirect method is based on the use of model activation reactions, 35Cl(n,)32P and 31P(n,)32P, that possess a similar neutron spectrum sensitivity as direct tritium production reactions on 7Li and 6Li, respectively, and an effective measurement of the activation product of model reactions, 32P, by Cherenkov radiation counting. The reaction rate of model reactions can be calibrated in order to obtain the TPR.