Introduction. High Purity Germanium (HPGe) detectors remain the recognized gold standard for high-resolution gamma-ray spectroscopy [1], [2]. The excellent energy resolution that HPGe detectors afford often makes them the detector of choice for applications as diverse as nuclear physics research, medical imaging, …
Description. Germanium detectors are semiconductor diodes having a p-i-n structure in which the intrinsic (i) region is sensitive to ionizing radiation, particularly X-rays and …
The Mirion Broad Energy Ge (BEGe) Detector covers the energy range of 3 keV to 3 MeV like no other. The resolution at low energies is equivalent to that of our Low Energy Ge …
where t meas is the overall measurement time during which the γ-rays emitted in the decay of the excited states of the decay products are measured by the HPGe detector array.. Equation (3) implies that the number of expected decays scales linearly with respect to the measurement time t meas.Since the plasma parameters can be kept constant over …
Open the ProSpect Gamma Spectroscopy Software and connect to the HPGe detector. 4. Configure the MCA settings as listed in Table 7-1. 5. Use the software to apply the recommended detector bias to the HPGe detector. This can be found on the detector specification sheet or listed on the side of the detector itself. 6.
the part of the gamma-ray energy captured in the HPGe. In a Compton Suppression System (CSS), (Fig. 6) the HPGe detector is surrounded by a NaI(Tl) annular detector which detects photons escaping from the HPGe.The signals from the HPGe and NaI are used in anticoincidence circuitry to remove the Compton background events from the primary
HPGe provides positive identifications Due to its far superior resolution, HPGe is the only radiation detection technology that provides sufficient information to accurately and reliably identify radionuclides from their passive gamma ray emissions. HPGe detectors have 20-30 times better resolution than NaI detectors. Also, unlike
For unknown radionuclide identification, it is important that a high purity germanium (HPGe) spectrometry system be calibrated correctly for energy. The energy calibration of an HPGe spectrometry system will drift over time due to a variety of factors including the ambient temperature, the line voltage applied to the system, variation in the ...
Purpose: To demonstrate the measurement of gamma-ray energies with high resolution provided by a High-purity Germanium (HPGe) detector. Semiconductor detectors made …
Purpose Segmented high purity germanium (HPGe) detectors have been used in many experiments to measure the position and energy deposition of gamma ray interactions. Significant efforts have been made to optimize the design and simplify the fabrication process. Amorphous germanium (aGe) coating is a desirable method to …
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Cutout view of the proposed detector concept. An HPGe crystal of true coaxial geometry with (electronic) segmentation in four azimuthal zones, two of which are intended for localization of the first interaction of the gamma ray (scattering segments), and two are intended for capturing the energy deposition of subsequent gamma-ray …
a passivation layer to protect the crystalline HPGe beneath. The technique has been used to produce large planar strip HPGe detectors by Mark Amman at the Lawrence Berke-ley National Laboratory (LBNL) [35] to detect soft γ-rays (0.2–5 MeV) in the COSI [36,37] experiment. The proper-ties of thin contacts have been thoroughly examined [37] and
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Broad-energy HPGe detectors have a useful range of 3 keV to 3 MeV, making them ideal for the assay of environmental samples. Such measure Determining the …
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Ge (Li) was later replaced with more advanced, high purity germanium (HPGe) detectors. ORTEC provides a comprehensive suite of HPGe detector solutions covering an extensive range of energies and for a …
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1. Introduction. For decades, radiation detectors based on high-purity Ge (HPGe) have been the preeminent technology for gamma-ray spectroscopy when excellent energy resolution and good efficiency are required [1], [2], [3], [4].Detectors of this type that are used solely for spectroscopy can be simple in design and typically consist of a single …
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HPGe detector with LN2 cryostat Source: canberra. High-purity germanium detectors (HPGe detectors) are the best solution for precise gamma and x-ray spectroscopypared to silicon detectors, germanium is much more efficient than silicon for radiation detection due to its atomic number being much higher than silicon and lower …
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In this paper, internal geometry and structure except for dead layers of the HPGe detector is obtained by X-ray radiography and 3D reconstruction. The optimal dead layers of the …
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Introduction The dead layer thickness provided by the manufacturer increases with the aging of the HPGe detector; the increase of dead layer thickness leads to the decrease in the detector's efficiency, not only due to gamma rays attenuation in the dead layer but also due to the reduction of the active volume of the detector. Purpose In this …