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
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
Sep 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
October 2024
Nuclear Technology
Fusion Science and Technology
Latest News
HALEU without hyperbole: ANS speaks up for science and transparent risk assessment
The American Nuclear Society recently issued an open letter in support of a science-based approach to the regulation of high-assay low-enriched uranium (HALEU) fuels for commercial nuclear energy, voicing member concerns about hyperbole in a recent article published in Science, which advocated for restrictions on the use of HALEU despite decades of effective safeguards and security. This is not the first time ANS has stepped in to present the measured opinion of its membership on the value and appropriate regulation of HALEU.
W. L. Dunn, A. M. Yacout, F. O′Foghludha
Nuclear Science and Engineering | Volume 110 | Number 2 | February 1992 | Pages 134-156
Technical Papers | doi.org/10.13182/NSE92-A23883
Articles are hosted by Taylor and Francis Online.
Gamma-ray and neutron dose-equivalent buildup factors are calculated for six common shielding materials in a point-source, infinite-slab, point-detector geometry using a decomposition of the solution to the transport problem into single- and multiple-scatter components. A rigorous solution for the single-scatter component is constructed and a Monte Carlo model for the multiple-scatter component is employed. Simplified models are fit to the calculated buildup factors as functions of slab thickness and source-detector separation, and model constants are evaluated for each of several source energies. Single-scatter and total slab buildup factors are presented, both in tabular form and in graphs that also show the fitted models, for six materials. The models are demonstrated for a sample problem.