Full Energy Peak Efficiency Calibration of HPGe detector by MCNP
ثبت نشده
چکیده
منابع مشابه
تعیین لایه مرده و بازده قله تمام - انرژی آشکارساز HPGe بااستفاده از کد MCNP و نتایج تجربی
One important factor in using an High Purity Germanium (HPGe) detector is its efficiency that highly depends on the geometry and absorption factors, so that when the configuration of source-detector geometry is changed, the detector efficiency must be re-measured. The best way of determining the efficiency of a detector is measuring the efficiency of standard sources. But considering the fact t...
متن کاملEfficiency 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 ...
متن کاملMonte 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...
متن کاملمدلسازی تغییرات ضخامت لایه مرده در شبیه‌سازی MCNP آشکارساز HPGe جهت بهینه‌سازی محاسبه بازده شمارش نمونه‌های داخل ظرف مارینلی
In this research, a method for considering the spatial variation of deal layer (DL) thickness at the lateral and top surfaces of HPGe detectors is presented to achieve a more precise simulation model for efficiency calculation especially in marinelli beaker geometries. As a good approximation, the lateral surface of the detector is divided into 12 segments, assuming each segment covers 30 degre...
متن کاملImproving Calibration of HPGe Detectors for In Situ Measurements – a Comparison of Semi-empirical and Monte Carlo Methods
Calibrations of an HPGe detector were made with respect to photon energy and angle of incidence for the use in field gamma spectrometry. The same detector was modelled in MCNP4C and simulated. This revealed some significant differences between the theoretical (simulated) efficiency and the measured efficiency of the detector, especially at lower energies. In order to investigate the reason for ...
متن کامل