Last update: 18 Dec 2020. Nuclear regulators, front line officers, and technical support professionals from 24 countries shared their experiences using High Purity Germanium …
The point-contact high-purity germanium detector (HPGe) has the advantages of low background, low energy threshold, and high energy resolution and can be applied in the detection of rare-event physics. However, the performance of HPGe must be further improved to achieve superior energy resolution, low noise, and long-term reliability. In this …
Radiation detectors constructed from large volume high purity Ge (HPGe) single crystals are widely used for gamma-ray spectroscopy. The detectors for this …
@article{Rathore2023ExperimentalEO, title={Experimental evaluation of the performance of a novel planar segmented HPGe detector for use in gamma emission tomography}, author={Vikram Rathore and Lorenzo Senis and Ane H{aa}kansson and Erik Andersson Sund{'e}n and Peter Andersson}, journal={Nuclear Instruments and Methods …
Fig. 1 (a) shows the schematic structure of the n-CdS/p-HPGe/p +-BaSi 2 HJSC. In the solar cell layout, HPGe, BaSi 2, and CdS are used as the active p-type absorber layer, p +-type BSF layer, and n-type window layer, respectively.Simulation of the modeled solar cell was performed under global air mass (AM) 1.5 spectrum at a one sun …
The $$beta $$ β decay endpoint energies corresponding to the decay from $$^{150}$$ 150 Pm to levels in $$^{150}$$ 150 Sm have been measured for the first time. The measurement has been made with a $$beta -gamma $$ β - γ coincidence setup of two thin window Planar HPGe detectors and four Clover HPGe detectors. This …
The half-life of 101 Tc was accurately measured with HPGe γ-detector following 306.8 keV γ-ray for about 140 min, and three methods R-value method, iterative method and translation method were adopted to process the data. Finally, a more precise and accurate value 14.02 ± 0.01 min was given and compared with former measured data.
A HPGe is adopted to obtain the spectrum in advance. Energy calibration is important for spectroscopy aimed for high resolving power. Our target in this experiment is discrimination of (^{233}mat{Pa}) line at 86.6 keV from (^{237}mat{Np}) one at 86.5 keV. Since the former provides roughly 1 count per hour per pixel, statistical data ...
The ~50% relative efficiency HPGe detector in the IDM-200-V is of an "over-square" diameter-to-length profile. The large diameter enhances low energy efficiency. The figures below show the point source absolute efficiency curves of an IDM-200-V in comparison with a more conventionally profiled detector of almost the same relative efficiency ...
Abstract. We have successfully developed and fielded an electromechanically cooled germanium radiation detector (EMC-HPGe) at Lawrence Livermore National …
To address this limitation, we have developed a novel prototype HPGe detector designed to be capable of achieving fine energy resolution and high event …
The purpose of an HPGe detector Is to convert gamma rays into electrical impulses which can be used, wit h suitable signal processing, to determine their energy and intensity. HPGe Detector Types Let us briefly review the various types of HPGe detector available in order to make what follows easier to understand, All HPGe radiation …
The decay curves recorded for 7 N pure germanium and HPGe crystals are shown in figure 2a–d, respectively. Carrier lifetimes are extracted by single exponential fitting of the spectra. The lifetime thus measured for the Umicore HPGe crystal (figure 2c and d) corroborates well with the supplier's data sheet. Usually, the crystal with a ...
1 Introduction. High-purity germanium (HPGe) single crystals find their application as detecting medium in radiation and spectroscopy detectors, and are mostly used in experiments dealing with highest energy resolution, like astro-particle physics, dark matter research, and as best solution for precise gamma- and X-ray spectroscopy. [] In …
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
High-purity germanium (HPGe) is ideal for detecting 0νββ decay because of its high energy resolution, low background, and high detection efficiency. The discrimination of single and double electrons has been seldomly investigated using a traditional HPGe detector (such as BEGe detector) because their position sensitivity is not good. ...
Comprehensive quality assurance/quality control procedure is very much necessary to obtain accurate and precise analytical measurement result. This paper discusses the quality control aspects of the High-Purity Germanium (HPGe) based gamma spectrometry system, which has been used for the measurement of low-level radioactivity …
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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 …
ABSTRACT: Experiments to search for neutrinoless double-beta (0νββ) decay of 76Ge using a high-purity germanium (HPGe) detector rely heavily on background suppression …
This paper summarizes some of the recent advances in high-purity germanium (HPGe) detector technologies and their applications. These important advances were …
The HPGe detector geometry was based on the dimensions of the detectors mounted in the new NRC – Negev WBC system which consists of 4 Semi-Planar HPGe detectors, manufactured by Eurisys Measures – France. The active area of each detector is 3800 mm2, with a diameter of 70 mm and a thickness of 25 mm. Each detector is equipped …
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, …
2.2. HPGe detector HPGe detectors provide excellent energy resolution (e. g. 2.2keV at a gamma-ray energy of 1.33MeV, corresponding to a relative energy resolution of better than 0.2%). The full energy peak efficiency of an HPGe detector depends on the size of the germanium crystal and the distance of the source from the detector.
Abstract. We report on the first experimental demonstration of Compton imaging of gamma rays with a single coaxial high-purity germanium (HPGe) detector. This imaging capability is realized by two-dimensional segmentation of the outside contact in combination with digital pulse-shape analysis, which enables to image gamma rays in 4 …
Keeping the crystal temperature at 70˚C for 5 days, the damaged HPGe detector whose resolution is 10.61 keV, can be restored to 2.5 keV at 1.33 MeV line of 60 Co . 4. Summary. Many efforts are made to restore the resolution of the damaged germanium crystal by means of annealing method. A special copper ingot is designed for cooling rod heating ...
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Ordering Information +. The ORTEC GWL (Well) P-type Reverse Coaxial Radiation Detector has a unique ion-implanted detector that has an ultra-thin dead layer only 0.3 μm thick), and therefore provides the most extensive useful energy range (10 keV to 10 MeV). This product is a great solution for low level counting of small samples.
A sample holder in Figure 7b was redesigned to hold HPGe crystals for avoiding any handling scratches. High vacuum level at 10-6 mbar was required for the evaporation of Al layer. The special set of conditions with our instrument were 4.89 kV high voltage, 0.2 ~ 0.4 nm/s of deposit rate, the thickness of 100 nm.
High-purity germanium (HPGe) detectors have very wide application in different field of physics from dark matter detection to search of neutrino less double beta decay also it has application in the search of electromagnetic property of the neutrino [1,2,3,4,5,6].Exposure of ton yr order is one of the prime needs of these types of physics …
Summary of Contents for ORTEC GEM10P4. Page 1 Oak Ridge, TN. The detectors are fabricated from P-type germanium with an outer contact of diffused Li and an inner contact of ion-implanted boron. ORTEC maintains a large stocklist of GEM detectors. Some of these have "super specifications," that is, a warranted energy resolution better than the ...
In order to meet the low noise and low background prerequisites as well as the safety rules at the reactor site, the Conus Collaboration and Mirion–Lingolsheim cooperated strongly on the detector design and fabrication. The resulting detector design is shown in Fig. 2.It can be divided into three main parts: the HPGe diode, the cryostat and …
The point-contact high-purity germanium detector (HPGe) has the advantages of low background, low energy threshold, and high energy resolution and can be applied …
The energy dependence of full energy peak efficiency and resolution of NaI(TI) and HPGe by using gamma ray spectroscopy were demonstrated in this work. Spectra were produced for a 137Cs and 60Co ...
Method. In this study, a prototype segmented planar HPGe detector is fabricated using a wraparound lithium diffusion electrode for bias voltage applying and …
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High purity germanium remains the material of choice for the detection of photons in the range of MeV or higher, down to the hard X-ray range. Since the operation of HPGe-based detectors is possible only at or below the liquid nitrogen temperature, their advantage is mainly the resolution, which matches the Fano factor if appropriate cooled …
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