Most radionuclides decay by gamma ray emission. Gamma ray measurement is the most common and widely used method for measuring nuclear material. It can be used to determine three different qualities of a sample:

  1. Total dose rate (commonly used for medical purposes)
  2. Ratio of the constituents of the sample
  3. Total radionuclide content of a source, either in terms of activity of the mass of a particular radionuclide

The gamma ray measurement process can be passive or active. In PASSIVE measurement the gamma rays emitted form radioactive decay are measured by appropriate detectors and counting electronics. In ACTIVE measurement gamma rays are used to interrogate samples and the attenuation of these interrogating gamma rays is measured. This is used to determine the ability for transmission through samples and thus the degree of attenuation in the sample material and the matrix in which it is contained.

ANTECH instruments perform gross gamma counting using ion chambers and plastic scintillators, and spectroscopy using low-resolution spectrometers (sodium iodide scintillators) or medium and high-resolution spectrometers (LaBr3 scintillators and high purity germanium detectors). ANTECH instruments are configured to perform far field measurements to view entire objects, and segmented and tomographic gamma scanning for more complex samples.

02 EMBASSY (Excavator Mounted Bucket Assay System) G3102-4216

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The ANTECH excavator mounted bucket assay system (EMBASSY) model G3102-4216 is a system designed to measure the radioactive contents of an excavator bucket. It can be employed to detect, measure and segregate radionuclide contamination in soil, gravel and rubble.The contaminates may include naturally occurring radioactive materials (NORM) such as Ra-226 and activation and fission products […]

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05 Automated Gamma Spectroscopy System (AGSS), G3010

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The ANTECH model G3010 Automated Gamma Spectroscopy System (AGSS) or automated sample changer is an effective solution for performing automated, unattended, high-resolution gamma spectroscopy (HRGS) measurements and analysis of bulk samples in a variety of sizes and types of Marinelli beakers. The design draws on more than 15 years of collaboration with ORTEC® and is […]

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Tray Assay System for ILW and FED Waste G3652

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                The ANTECH Model G3652 Tray Assay System is a High-resolution Gamma Assay System specially developed for Magnox Berkeley Licensed Site for the measurement of fissile material to be stored both in product packages and waste containers such as Yellow Box®, MOSAIK and TRU-Shields.  

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Universal Multi-Detector Counting System, B3001-600

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The B3001-600 Universal Multi-Detector Counting System (UMDCS) is a self-contained electronic module designed to be used with various radioactive analysis systems employing both gamma ray and neutron detectors. It can accommodate pulse outputs from plastic scintillators, sodium iodide detectors or ³He neutron detectors.

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