Title of article :
Determination of Fano Factor and Pre-amplifier Noise from the Measurement of Energy Resolution of a HPGe Detector
Author/Authors :
SAMAT, S. B. Universiti Kebangsaan Malaysia - School of Applied Physics, Faculty of Science and Technology, Malaysia , PRIHARTI, W. Universiti Kebangsaan Malaysia - School of Applied Physics, Faculty of Science and Technology, Malaysia
Abstract :
A HPGe detector and γ-ray multinuclide standard solution were used to get several data pairs of photon energy E and detector’s energy resolution FWHM. A series of graph of FWHM2 versus E was plotted to determine the detector’s Fano factor and pre-amplifier noise, which yielded the mean values of 0.123±0.003 and (7.448±0.011) × 10^−1 keV, respectively. The Fano factor value agrees within 95% confident interval with the mostly quoted value of 0.13 for semiconductor detectors. The obtained preamplifier noise is in agreement with typical manufacturer’s specification.
Keywords :
Fano factor , FWHM , gamma , ray spectrometry , pre , amplifier noise
