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.
K. Shure
Nuclear Science and Engineering | Volume 56 | Number 2 | February 1975 | Pages 219-224
Technical Note | doi.org/10.13182/NSE75-A26664
Articles are hosted by Taylor and Francis Online.
Neutron penetration in water and through iron-water shields of practical interest obtained from P3 multigroup calculations employing P0-P3 scattering components has been reasonably reproduced by P3 11-group (10 nonthermal) calculations limited to P0 and P1 scattering components to which an extended transport approximation incorporating empirically determined cross-section adjustment factors is applied.
