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
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
Aug 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
A better model? Low levels of radiation and health effects
One of the more pivotal issues in facilitating the use of radiation sources—including nuclear power—in the United States (and most of the Western world) is concern about the health effects of low levels of radiation. The current regulatory assumption is that every additional increment of radiation linearly increases the risk of cancer.
G. C. Pomraning
Nuclear Science and Engineering | Volume 101 | Number 4 | April 1989 | Pages 330-340
Technical Paper | doi.org/10.13182/NSE89-A23622
Articles are hosted by Taylor and Francis Online.
The streaming term in the transport equation is expressed in arbitrary geometry. It is shown that explicit and relatively simple results are obtained if one uses the surface geometry of the body under consideration to define the polar and azimuthal angles describing the unit vector of propagation. In particular, the local normal and principal directions of the surface play an important role in these considerations. The results for the streaming term are expressed in both gradient and divergence form.