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Division Spotlight
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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!
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Fusion Science and Technology
Latest News
NRC engineers share their expertise at the University of Puerto Rico
Robert Roche-Rivera and Marcos Rolón-Acevedo are licensed professional engineers who work at the U.S. Nuclear Regulatory Commission. They are also alumni of the University of Puerto Rico–Mayagüez (UPRM) and have been sharing their knowledge and experience with students at their alma mater since last year, serving as adjunct professors in the university’s Department of Mechanical Engineering. During the 2023–2024 school year, they each taught two courses: Fundamentals of Nuclear Science and Engineering, and Nuclear Power Plant Engineering.
G. Y. Liang, N. R. Badnell, G. Zhao
Fusion Science and Technology | Volume 63 | Number 3 | May 2013 | Pages 372-377
Technical Paper | Selected papers from IAEA-NFRI Technical Meeting on Data Evaluation for Atomic, Molecular and Plasma-Material Interaction Processes in Fusion, September 4-7, 2012, Daejeon, Republic of Korea | doi.org/10.13182/FST13-A16444
Articles are hosted by Taylor and Francis Online.
R-matrix calculations of electron impact excitations have been done for several isoelectronic sequences under the program of the Atomic Processes for Astrophysical Plasmas network in the United Kingdom. The intermediate-coupling framework transformation R-matrix approach was used to generate data in this program since it is less resource (time/memory) demanding than the full Breit-Pauli R-matrix method, without reduction of accuracy. A detailed accuracy assessment was done for four/five/six selected ions spanning the isoelectronic sequence, which provides insight into the behavior of the whole sequence of ions. For each ion, we adopted the following procedure: First, the target structure was assessed by comparing the calculated level energies with available experimental data and with previous calculations using different methods. Second, weighted oscillator strengths or line strengths or radiative decay rates were compared with various available theoretical works for several transitions. Usually, a "survey" comparison with another database has been done for all available transitions by way of a scatter plot. Finally, direct comparison for the excitation (effective) collision strength is done with available measurements or with previously published data. A survey comparison with another database is usually presented to investigate the spread of the consistency or inconsistency among the different calculations.