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.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Latest Magazine Issues
Apr 2026
Jan 2026
Latest Journal Issues
Nuclear Science and Engineering
June 2026
Nuclear Technology
March 2026
Fusion Science and Technology
May 2026
Latest News
DOE selects first companies for nuclear launch pad
The Department of Energy’s Office of Nuclear Energy and the National Reactor Innovation Center have announced their first selections for the Nuclear Energy Launch Pad: three companies developing microreactors and one developing fuel supply.
The four companies—Deployable Energy, General Matter, NuCube Energy, and Radiant Industries—were selected from the initial pool of Reactor Pilot Program and Fuel Line Pilot Program applicants, the two precursor programs to the launch pad.
Yukio Ishiguro, Akira Hasegawa
Nuclear Science and Engineering | Volume 64 | Number 3 | November 1977 | Pages 786-791
Technical Note | doi.org/10.13182/NSE77-A27109
Articles are hosted by Taylor and Francis Online.
A simple and convenient method is developed to account for the neutron resonance mismatches due to the composition dissimilitude in the vicinity of gross region interfaces. It is shown that the effective resonance cross sections near a region interface can be obtained from the table-look-up of a cross-section set. The numerical results obtained with the present method are shown to be in an excellent agreement with the exact calculations using a computer code.