INVESTIGATION OF CERTAIN PERFORMANCE CHARACTERISTICS OF A THALLIUM ACTIVATED SODIUM IODIDE SCINTILLATION DETECTOR

Abstract

An investigation and quantification of certain performance characteristics of a flat type 3†x 3†thallium activated sodium iodide scintillation detector was carried out.  Certain performance characteristics like the operating voltage, the energy calibration, the photomultiplier tube (PMT) gain, the detector resolution and detector efficiency of the detector were determined and discussed. A quality assurance programme was carried out in laboratories of North Eastern Hill University, Shillong, India and Bhabha Atomic Research Centre (BARC), Mumbai, India to validate our analytical method for determination of radio-nuclides in environmental samples. The quality of the data generated by cross-checking method assures that the NaI(Tl) detector which is used for our study is efficient and trustworthy whereby data generated by it can be considered authentic and of acceptable quality.