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
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Oklo completes end-to-end demonstration of advanced fuel recycling
Oklo Inc. has announced that it has completed the first end-to-end demonstration of its advanced fuel recycling process as part of an ongoing $5 million project in collaboration with Argonne and Idaho National Laboratories. Oklo’s goal: scaling up its fuel recycling capabilities to deploy a commercial-scale recycling facility that would increase advanced reactor fuel supplies and enhance fuel cost effectiveness for its planned sodium fast reactors.
Willard G. Winn
Nuclear Technology | Volume 103 | Number 2 | August 1993 | Pages 262-273
Technical Paper | Radiation Application | doi.org/10.13182/NT93-A34848
Articles are hosted by Taylor and Francis Online.
Germanium detector efficiencies for vial geometries are modeled as ε = k[1- exp(-bh)]/bh, where h is the sample fill-level of the vial and k and b are constants relative to h. The model is tested against experimental data generated with 6 germanium detectors (8.8 to 90% standard efficiencies), 3 vials (24- to 64-mm diameters, 4- to 65-mm fill-levels), and 11 gamma energies (88 to 1836 keV). These data represent over 1000 comparisons between the model and experimental measurements. The overall agreement is within a few percent, with average deviations <1.0% and root-mean-square deviations <3%. For typical applications, the model requires only a few (2 to 3) vial calibration measurements, as opposed to the larger number (6 to 8) typically used for empirical data fitting. Methods and examples are discussed for use of the general model. Limits of the gen eral model, attenuation corrections for different sample media, and nondestructive assay calibrations for slab samples are also discussed. Also, possible model extensions are discussed for including gamma-energy dependence and Marinelli counting geometries.