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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
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.