Full-energy peak efficiency of asymmetrical polyhedron germanium detector

Behavior of Several Germanium Detector Full-Energy-Peak Efficiency Curve-Fitting Functions

sult in interpolated efficiencies differing by as much as 6% when using different curve-fitting functions in the 700-keV to 900-keV region? Second, since the coincidencefree standard only covered the energy range of 59.5 keY to 1115.5 keV,how much uncertainty would be introduced by extrapolating the curve fits to higher energy where there were no experimental points? Third, what effect would on...

Full Energy Peak Efficiency Calibration of HPGe detector by MCNP

Monte Carlo Determination of Full Energy Peak Efficiency for HPGe Detector and Self-Absorption Correction of Environmental Samples

The Monte Carlo method was used to determine full energy efficiency of a high-purity germanium (HPGe) coaxial detector within an energy range of 53.2-2614 keV. Also, measurement was carried out for a standard Marinelli beaker of 600cm3, which was placed into the reference material of mixed gamma. The plot of the experimentally derived effic...

Determination of Full Energy Peak Efficiency of NaI(Tl) Detector Depending on Efficiency Transfer Principle for Conversion Form Experimental Values

In this work we calibrated the NaI(Tl) scintillation detectors (5.08 × 5.08 cm and 7.62 × 7.62 cm) and the Full Energy Peak Efficiency (FEPE) for these detectors have been calculated for point sources placed at different positions on the detector axis using the analytical approach of the effective solid angle ratio. This approach is based on the direct mathematical method reported by Selim and ...

A New Precision Peak Detector/Full-Wave Rectifier

A new precision peak detector/full-wave rectifier of input sinusoidal signals, based on usage of dual-output current conveyors, is presented in this paper. The circuit gives a DC output voltage that is the peak input voltage over a wide frequency range, with a very low ripple voltage and low harmonic distortion. The proposed circuits use an all-pass filter as a 90 ̊ phase shifter of the processe...