PHOTOPEAK EFFICIENCY OF Ge DETECTORS STUDIED WITH THE CODE MCNP

Validation of a NaI(Tl) detector’s model developed with MCNP-X code

The Monte Carlo method was used to calculate the photon detection efficiency and energy resolution curves for a 1.500 100 NaI(Tl) scintillator detector (crystal þ housing þ photomultiplier tube material equivalent) exposed to gamma rays in the energy range from 20 keV to 662 keV. This work aims to design a precise computational model, based in Monte Carlo simulation, which can be used in practi...

A probabilistic g-ray tracking method for germanium detectors

A new g-tracking method based on the Compton-scattering probability of photons in a spectrometer composed of segmented Ge detectors has been developed and evaluated with the GEANT 3 simulation code. The performance of this probabilistic method, in terms of photopeak detection efficiency and peak-to-total ratio calculated for a 4p array composed of planar detectors, is comparable with the ones o...

Comparison of sliced lungs with whole lung sets for a Torso Phantom measured with Ge detectors using MCNP and autoradiography

Efficiency and Resolution of Germanium Detectors as a Function of Energy and Incident Geometry

The use of germanium detectors for the identification and quantification of radionuclides in unknown and non-standard counting geometries has increased in the recent past with the need to clean up and verify sites used for radionuclide processing, smuggling detection and other purposes. The calculation of the amount of radionuclide present requires a knowledge of the efficiency of the detector ...

Full Energy Peak Efficiency Calibration of HPGe detector by MCNP