a reconnaissance study has been made on the distribution of 238u, 232th, 40k, 137cs andgeochemical features in soil and sediment samples at various locations on the coast of bushehr in the persiangulf. in this study a gamma-ray spectrometer based on a high purity germanium detector and a pc basedmca and x-ray fluorescence (xrf) method were used. estimation of the measured radionuclide contentha...

In diagnostic X-ray computed tomography (CT) imaging, some applications, such as dose measurement using the Monte Carlo method and material decomposition dual/multi-energy approaches, rely on accurate knowledge of energy spectrum beam. this regard, detectors providing an estimation could greatly impact quality CT imaging patient-specific dosimetry. The aim study is to estimate intrinsic efficie...

Abstract $$\gamma $$ γ -ray tracking is based on a new generation of position sensitive high-purity germanium (HPGe) detectors. A novel type cluster detector was successfully developed and assembled for the high-resolution spectrometer Advanced Gamma Tracking Array AGATA. The core part consists three encapsul...

A two-dimensional analysis of three coincident gamma-rays in (108)Ag(m) decay, detected by two NaI(Tl) scintillation detectors, allows a direct measurement of the source activity. A modification of the Eldridge-Crowther formulas derived originally for (125)I was done recently for the case of two coincident gamma-rays in (60)Co decay (Volkovitsky and Naudus, 2009). A similar approach is applied ...

The studies of lead shielding efficiency from the gamma background measurements were performed in the salt cavern of the copper mine - a site considered for an underground laboratory. Within the energy range of 50-2700 keV, the measured gamma-ray count rates normalized to the mass of the high-purity detectors germanium crystal are 5.93 and 6.32 s-1kg-1 for the used low-background and portable s...

Portal monitors, container scanners, and mobile search systems, constructed with high resolution germanium (HPGe) detectors, are currently being installed at locations world-wide. This reflects a general desire for improved performance and a reduction in the time to make a good decision in interdiction cases. An integrated gamma-ray spectrometer, incorporating a mechanically-cooled HPGe detecto...

The study of inelastic scattering reactions is important both in basic research as it can provide an insight on nuclear structure and aid the validation theoretical models, well field applications. most frequently used method to determine neutron induced cross section by recording emitted gamma rays from de-excitation target nucleus. In this direction, high energy resolution HPGe detectors inst...

A prototype gamma-ray scanning system was designed to perform post-irradiation examination measurements of nuclear fuel. The is composed a coaxial high-purity germanium (HPGe) detector, collimator, and mechanical positioning stages that translate the fuel sample across front collimator. This paper documents design process, modeling laboratory characterization performed validate system. done usi...