UBC Theses and Dissertations
Resolution and line shape in scintillation counters Takhar, P. S.
An experimental study has been made of a number of factors that determine the pulse height resolution of Scintillation Counters. A statistical model is developed from which an analytic expression for the ideal line shape is obtained. Excellent agreement is found with observations using an artificial light pulser. An attempt to understand the noise spectra, exponential and non exponential under various conditions, has been made. A comparison is made between non crystalline organic scintillators and sodium iodide crystals of similar sizes. It is shown that for gamma-ray detection an important contribution to the line width originates with variations in the light collection efficiency from different regions of the scintillators.
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