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
Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
W. R. Mills, Jr., L. S. Allen, F. Selig, R. L. Caldwell
Nuclear Technology | Volume 1 | Number 4 | August 1965 | Pages 312-321
Technical Paper | doi.org/10.13182/NT65-A20528
Articles are hosted by Taylor and Francis Online.
The die-away of thermal neutrons and capture gamma rays from a pulsed source has been measured in a heterogeneous rock-fluid system for a variety of physical conditions. The system was a cubical lattice about one meter on a side, consisting of vertical calcium carbonate rods and empty channels. The channels were filled with either calcium carbonate rods or fluid, thus giving a variable volume ratio of rock and fluid. Measurements with a 3He counter and NaI detector were carried out in a 7-in. (18-cm) diameter hole through the middle of the cube. Experimentally measured neutron lifetimes were compared to values calculated from a three-group time- and space-dependent computer code. A theoretical gamma-ray decay curve was calculated from a spatial integration over the computed neutron distribution. Unattenuated and singly scattered radiation were included.