Test & Evaluation of a Long Narrow Rectangular NaI(Tl) Polycrystalline Scintillator

A series of measurements was made to determine the performance of a long, rectangular, polycrystalline, NaI(Tl) scintillator. Using collimated sources of 137Cs and 22Na, scans were made along the scintillator to measure pulse height and energy resolution as a function of position. The measurements were made using first only one phototube at a time and then with both tubes. Measurements were also made with broad-beam, uncollimated radiation. The data were compiled and analyzed, and are presented in both graphical and tabular form.