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
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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
Oct 2025
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
December 2025
Nuclear Technology
November 2025
Fusion Science and Technology
Latest News
Energy Secretary to speak at the 2025 ANS Winter Conference & Expo
In less than two weeks, the American Nuclear Society’s second annual conference of the year, the 2025 ANS Winter Conference & Expo, will come to Washington, D.C.
Today, ANS is announcing that Energy Secretary Chris Wright will be joining the list of nuclear leaders slated to speak at the conference.
Click here to register for the meeting, which will take place November 9–12 in Washington, D.C., at the Washington Hilton. Be sure to do so before November 7 to take advantage of priority pricing.
G. S. Sidhu, W. E. Farley, L. F. Hansen, T. Komoto, B. Pohl, C. Wong
Nuclear Science and Engineering | Volume 66 | Number 3 | June 1978 | Pages 428-433
Technical Note | doi.org/10.13182/NSE78-A27226
Articles are hosted by Taylor and Francis Online.
We have remeasured the spectra for the neutron and secondary gamma rays due to a 14-MeV neutron source by replacing liquid nitrogen, used in our earlier work, with liquid air (LA) as the transport medium. The deuterium-tritium neutron source was located at the center of the sphere (129.3-cm radius) of LA (20.7 at. % O2 remainder N2). Scintillation detectors were located at a distance from the sphere. Using time-of-flight techniques, we obtained approximate neutron energy information by measuring the time-of-arrival of neutrons at the detectors. We also measured, in a 60-ns time window before the arrival of 14-MeV neutrons, the gamma-ray spectrum that results from nonelastic neutron interactions in LA. To compare the measured spectra with code calculations, we folded the detector efficiencies and experimental parameters into the calculated output of TARTNP, the coupled neutron-photon Monte Carlo transport code of Lawrence Livermore Laboratory. The calculated spectra for gamma rays and neutrons and the calculated radiation doses show good agreement with the measurements. The results of this work provide a benchmark point on a radiation dose versus range-in-air curve obtained by the TARTNP calculations.