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
May 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
June 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Developing a new regulatory framework for advanced reactors: Update on Part 53
White
The American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) on March 29 held another presentation in its monthly Community of Practice (CoP) series. The presenter, Patrick White with the Nuclear Innovation Alliance (NIA), talked about the current status of efforts to develop a new regulatory framework for advanced reactors—known as 10 CFR Part 53 or simply Part 53. White serves as the research director of the NIA, where he leads their research as well as analysis-based stakeholder and policymaker engagement and education. White’s March 29 presentation is publicly available on YouTube and at ANS’s publication platform Nuclear Science and Technology Open Research (NSTOR).
RP3C chair N. Prasad Kadambi opened the CoP with brief introductory remarks about the RP3C before he welcomed White as the session’s presenter.
White covered three main topics: the history of the existing regulatory frameworks for new reactors, progress to date on the development of the Part 53 rule for advanced reactors, and the current status and next steps for the Part 53 rulemaking process.
M. Baldo, R. Pucci, P. F. Bortignon
Fusion Science and Technology | Volume 18 | Number 2 | September 1990 | Pages 347-350
Technical Notes on Cold Fusion | doi.org/10.13182/FST90-A29306
Articles are hosted by Taylor and Francis Online.
The approach to equilibrium of a deuteron gas absorbed into a metal is considered in the framework of a model in which the crystal is described in terms of its elementary excitations. The deuteron-deuteron interaction is dominated by the Plasmon exchange; while the relaxation to equilibrium is mainly due to the coupling with the phonons. The particle-hole contribution is smaller than the plasmon contribution, but not negligible. The time evolution of the deuteron gas, after a first stage dominated by quasi-free scattering, is characterized by the relaxation toward the formation of quasi-deuterium molecules. During this evolution toward equilibrium, fusion reactions can take place at an experimentally detectable rate, while at equilibrium the fusion rate is quite small and comparable with the one for free deuterium molecules.
