Application of the Monte Carlo method for the calibration of an in situ gamma spectrometer.
A MCNP model was developed for the efficiency calibration of an in situ gamma ray spectrometry system based on a high purity germanium (HPGe) detector. The detector active crystal volume was adjusted semi-empirically against experimental measurements. Calculated full energy peak efficiency curves, over the photon energy range between 50 keV and 5 MeV, are presented for surface and slab source configurations. The effect of different collimator apertures and the contribution of different HPGe crystal regions in the detector response are also shown.
Tzika
Faidra
F
Institute of Nuclear Technology & Radiation Protection, NCSR Demokritos, Attikis, Greece. faidra@ipta.demokritos.gr
Kontogeorgakos
Dimitrios
D
Vasilopoulou
Theodora
T
Stamatelatos
Ion E
IE