ABSTRACT

LabSOCS (Laboratory Sourceless Object Calibration Software) is a computer program that performs mathematical efficiency calibrations of Ge detectors, without any use of radioactive sources by the laboratory user. This allows quick and accurate calibrations of many geometries that are difficult to do (non-water samples), take time to obtain the reference sources and make them simulate the sample, require radiochemistry knowledge to make the simulation accurate, and cost money to purchase the radioactive calibration standards and pay for the labor. Thus, the advantages of an accurate computer program to do this are obvious. The purpose of the tests summarized in this document is to show how accurate the mathematical calibration is.

The LabSOCS software is an improved version of the successful and widely accepted ISOCS (In situ Object Calibration Software) mathematical In situ efficiency calibration product. The improvements relevant to laboratory applications include a totally revised detector characterization method for increased accuracy at very close distances, new computational algorithms to improve attenuation corrections at close energies, and also a method to better describe the contour of a complex beaker shape for improved accuracy.