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
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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
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Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
Katsuhiro Ohkawa, Richard T. Lahey, Jr.
Nuclear Technology | Volume 67 | Number 3 | December 1984 | Pages 437-451
Technical Paper | Heat Transfer and Fluid Flow | doi.org/10.13182/NT84-A33501
Articles are hosted by Taylor and Francis Online.
A gamma-ray scattering densitometer was developed for the nonintrusive measurement of the local void fraction in complex geometries. The densitometer system consisted of a shielded 137Cs photon source, a NaI photon detector, and a collimator system that defined the scattering volume within which the photons were scattered. An analytical model for the scattering events was developed. This model took the form of an integral equation, which expressed the measured counting rate in terms of the geometric configuration, local density, and the nuclear properties of the scattering volume. An interactive-graphics-based numerical procedure for inversion of the integral equation was developed. Results of two-phase flow measurements in a concentric annulus are given.
