A Pulse Area Analyzer (PAA) for High Resolution Gamma Ray Spectroscopy

A different type multichannel analyzer has been designed, built, and tested for the High Spectral Resolution Gamma Ray Spectrometer to be flown on the HEAO spacecraft. This system offers superior dynamic range, energy conversion, and stability for large Ge(Li) detectors. Theoretical and measured results from an 8192 channel analyzer are presented.