Products
Gamma Ray Standards
Analytics' Mixed-Gamma-Ray Standards provide efficiency calibrations for germanium gamma-ray-spectrometer systems over a wide energy range. These radionuclide mixtures provide the most accurate calibrations available for modern, high-efficiency germanium detectors.
All custom-made, gamma-ray calibration standards must pass Analytics' quality-control requirements as follows:
Calibrations utilizing Analytics' standards demonstrate traceability to NIST. Analytics' participation in the NIST/ Nuclear Energy Institute (NIST/NEI) Measurements Assurance Program for the Nuclear Power Industry satisfies the requirements of the United States' Nuclear Regulatory Commission's Regulatory Guide 4.15, Revision 1, 1979, and ANSI N42.22-1995 American National Standard - Traceability of Radioactive Sources to the National Institute of Standards and Technology (NIST) and Associated Instrument Quality Control.
Each standard is prepared gravimetrically with a calibrated balance. After preparation, each standard is counted with a calibrated, germanium spectrometer system.
The counting efficiencies at each primary energy are compared to the counting efficiency of at least one independent standard and agreement must be within Analytics' stated uncertainty. For the quality-control testing of custom-geometry gamma-ray standards, Analytics maintains a current database including efficiencies from more than 40,000 individual standards in over 600 geometries.