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
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting 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!
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Latest News
WIPP’s SSCVS: A breath of fresh air
This spring, the Department of Energy’s Office of Environmental Management announced that it had achieved a major milestone by completing commissioning of the Safety Significant Confinement Ventilation System (SSCVS) facility—a new, state-of-the-art, large-scale ventilation system at the Waste Isolation Pilot Plant, the DOE’s geologic repository for defense-related transuranic (TRU) waste in New Mexico.
G. M. Reynolds, S. M. Sperling, W. E. Selph
Nuclear Science and Engineering | Volume 42 | Number 3 | December 1970 | Pages 324-334
Technical Paper | doi.org/10.13182/NSE70-A21221
Articles are hosted by Taylor and Francis Online.
High resolution measurements have been made of the gamma-ray spectrum produced in liquid nitrogen by a 14-MeV neutron source. The spectra of gamma rays from neutron inelastic scattering were measured to a distance of six feet by pulsing the source. Comparison of the inelastic photon flux with discrete ordinates calculations using ENDF/B neutron cross sections and recent gamma-ray production cross sections shows good agreement for the strong well-resolved lines. The results of unfolding the continuum part of the spectrum reveal a flux of high energy lines that is a sizable fraction of the total flux of resolved lines. These normally unresolved gamma rays account for part of the gap in the nitrogen nonelastic cross section.