Radioactivity was measured for 170 cow's milk samples in Salah-Din governorate. Samples were by a gamma spectrometry system, using high purity germanium (HPGe) detector. The detector shielded 10 cm all sides with cadmium copper the inner sides. selected characteristic peaks detection of different ware 1460kev K-40. energy calibration performed set standard ray sources Eu-152. results show prese...

Cosmic-ray muons can be used for imaging of large structures, or high-density objects with high atomic number. The first task can be performed by measurement of muon absorption within very thick material layers, while the second approach is based on muon multiple scattering. However, the muon imaging of small structures with low atomic number and density was not yet solved appropriately. Here w...

The full energy peak efficiency (ɛ) relation of HpGe detector is determined and compared with the "spectrum shape" natural background (BG) for (121.8-1408) keV range. A one liter Marinelli beaker soil standard containing Eu-152 material used in calibration measurement. MATLAB fitting program were obtain from experimental values, to BG count rates at corresponding values used. ɛ / factor 1.154 1...

We present a new concept for c-ray detector arrays. An example, called GRETA (Gamma-Ray Energy Tracking Array), consists of highly segmented HPGe detectors covering 4p solid angle. The new feature is the ability to track the scattering sequence of incident c-rays and in every event, this potentially allows one to measure with high resolution the energy deposited, the location (incident angle) a...

The technical details and performance of the newly developed Sandwich spectrometer for ultra low-level gamma-ray spectrometry are presented. The spectrometer, which consists of two HPGe detectors, an active muon shield and a lead/copper shield with a convenient and rapid opening mechanism, is located in an underground laboratory at a depth of 500 m water equivalent. The data is collected in lis...

Portable, high-resolution gamma spectroscopy has long been a vital technique in routine safeguards accountancy. The high resolution enables the spectrum analysis to accurately determine the isotopic content of the sample. All currently deployed systems for this application are based on liquid-nitrogen cooled, high-purity germanium (HPGe) detectors, with the spectrum analysis performed on portab...

Prompt gamma-ray neutron activation analysis (PGNAA) is now a proven method for the identification of chemical warfare agents and explosives in military projectiles and storage containers. Idaho National Laboratory is developing a next-generation PGNAA instrument based on the new Ortec Detective mechanically-cooled HPGe detector and a neutron generator. In this paper we review PGNAA analysis of...