GAMATOOL Attenuation correction software

Gamatool™ is a PC windows software package for calculating correction factors for the self-absorption of gamma-rays in samples which have cylindrical symmetry (Marinelli beakers or bottles). The activities of the radionuclides present in the sample can be accurately determined, using the calculated correction factors and an efficiency calibration curve obtained using a reference source or standardised solution.

The gamma-rays emitted by the radionuclides distributed throughout the sample can be absorbed in the sample material before reaching the detector. This self-absorption may be different for the sample and the calibration source, so estimates of the radionuclide activities based solely on the calibration curve can be in error. Gamatool offers a user-friendly method to correct for these effects to give an accurate estimate of the activities.

The advantages of Gamatool are:
• Based on a method developed at PTB (Germany)
• Attenuation factors for sample matrix densities included
• No detailed knowledge of the detector construction is required
• Results are obtained rapidly
• User-friendly operation

Further details on this computer program are available on request.