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
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
Latest News
NRC v. Texas: Supreme Court weighs challenge to NRC authority in spent fuel storage case
The State of Texas has not one but two ongoing federal court challenges to the Nuclear Regulatory Commission that could, if successful, turn decades of NRC regulations, precedent, and case law on its head.
John R. Huizenga
Nuclear Technology | Volume 14 | Number 1 | April 1972 | Pages 20-32
Technical Paper | Session on Physics of Nuclear Materials Safeguards / Reactor | doi.org/10.13182/NT14-1-20
Articles are hosted by Taylor and Francis Online.
Theoretical expressions are developed for near barrier fission of even targets induced with dipole and quadrupole photons. Although the formulas are developed for a single-humped fission barrier and valid when the second barrier has the higher energy, the same equations are applicable for a two-humped barrier by introducing a more complicated expression for the fission transmission coefficients. Dipole fission of an odd mass target is discussed also. Some comparisons are made between theory and experiment.