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
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
NRC cuts fees by 50 percent for advanced reactor applicants
The Nuclear Regulatory Commission has announced it has amended regulations for the licensing, inspection, special projects, and annual fees it will charge applicants and licensees for fiscal year 2025.
Itsuro Kimura, Katsuhei Kobayashi
Nuclear Science and Engineering | Volume 106 | Number 3 | November 1990 | Pages 332-344
Technical Paper | doi.org/10.13182/NSE90-A29061
Articles are hosted by Taylor and Francis Online.
Thermal-neutron-driven fast neutron fields using a fission plate and a 6LiD converter are briefly reviewed. The characteristics of a large (27-cm-diam × 1.1-cm-thick) fission plate made of highly enriched uranium and a sandwich-type 6LiD converter (two 10-cm-square × 1-cm-thick 6LiD plates) are presented, both of which have been used at the heavy water thermal neutron facility at the Kyoto University Reactor. The neutron spectra in both fields were calculated by the MCNP Monte Carlo code. The average neutron energy and the neutron spectrum of the 6LiD converter were measured and the results agree with the predicted values. Using both fields, we measured the average cross sections for some threshold reactions, 6 with the fission plate and 23 with the 6LiD converter. The results are compared with evaluated values and previous measurements.
