High Purity Germanium Detectors
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 …
Evaluation of the passivation effect and the first-principles
Bulk germanium (Ge) is an indirect band-gap semiconductor with a band gap of 0.67 eV at room temperature. The high carrier mobilities of electrons and holes at room temperature are 3900 cm 2 /Vs and 1900 cm 2 /Vs, which are approximately 2.6 and 4.2 times that of silicon [1, 2], respectively.High-purity Ge detectors (HPGe) have the …
RADIATION DAMAGE OF GERMANIUM DETECTORS
research platform to scholars worldwide. Lawrence Berkeley National Laboratory ... Title: RADIATION DAMAGE OF GERMANIUM DETECTORS Author: Pehl, Richard H. Publication Date: 04-18-2011
High Purity Germanium (HPGe) Detectors Market Size, …
High Purity Germanium (HPGe) Detectors market is projected to reach US$ million in 2029, increasing from US$ million in 2022, with the CAGR of % during the period of 2023 to 2029. Influencing ...
Electrical Characteristics of 3D Trench Electrode Germanium Detector
Germanium, due to its characteristics such as a narrow bandgap, high electron mobility, and high energy resolution, has emerged as an ideal material to produce various types of detectors [1,2,3].It has found widespread applications in fields such as nuclear physics, dark matter detection, and medical imaging [4,5,6,7,8].High-purity …
Fabrication and characterization of high-purity germanium detectors
Large, high-purity, germanium (HPGe) detectors are needed for neutrinoless double-beta decay and dark matter experiments. Currently, large (> 4 inches in diameter) HPGe crystals can be grown at the University of South Dakota (USD).
N-Type High Purity Germanium Coaxial Detectors
N-Type High Purity Germanium Coaxial Detectors Published in: IEEE Transactions on Nuclear Science ( Volume: 26, Issue: 1, February 1979 ) Article #:
Clover Detectors Four Coaxial Germanium Detectors …
of four n type germanium detectors like a 4-leaf clover. This configuration drastically improves the total system efficiency and compensates for the still limited relative efficiency of conventional n type crystals. Well over 200 Mirion CLOVER detectors are currently in operation worldwide. Although CLOVER detectors should be considered as
High-Purity Germanium: Detector Fabrication and …
The availability of germanium with less than 1010 acceptors/cm3 has enabled us to fabricate and study the performance of germanium detectors of substantially larger volume than has hitherto been possible except by using lithium-drifting techniques. Detectors having a sensitive volume of up to 25 cm3 have been made. These detectors have a …
Study of cosmogenic activation in $^{76}$Ge enriched germanium …
Rare event search experiments using germanium detectors are operated in underground laboratories to minimize the background induced by cosmic rays. However, the cosmogenic activation in germanium crystals on the ground during fabrication and transportation generates long half-life radionuclides and contributes a considerable …
The Search for Double Beta Decay With Germanium Detectors…
High Purity Germanium Detectors have excellent energy resolution; the best among the technologies used in double beta decay. Since neutrino-less double beta decay hinges on the search for a rare peak upon a background continuum, this strength has enabled the technology to consistently provide leading results. The Ge crystals at …
Characterization of germanium detectors for the first …
Abstract. This article reports the characterization of two High Purity Germanium detectors performed by extracting and comparing their efficiencies using experimental data and Monte Carlo simulations. The efficiencies were calculated for pointlike γ-ray sources as well as for extended calibration sources.
Germanium Detectors | Mirion
Germanium detectors are semiconductor diodes with p-i-n structure in which the intrinsic (i) region is sensitive to ionizing radiation, particularly X-rays and gamma rays. Request …
Scintillation Detectors vs Germanium Detectors | nuclear …
Germanium Detectors. A semiconductor detector is a radiation detector based on a semiconductor, such as silicon or germanium, to measure the effect of incident charged particles or photons. Semiconductor detectors are widely used in radiation protection, an assay of radioactive materials, and physics research. Advantages of Germanium …
Criteria-based selection of high-purity germanium detectors
High-purity germanium (HPGe) detectors are the most popular detectors for the detection, identification, and quantification of gamma-emitting radionuclides in various samples. As on today and also in the foreseeable future, these detectors offer the highest energy resolution among the gamma radiation-detecting materials.
Segmented Planar Germanium EGPS series Detectors …
Detectors for X and γ Ray Measurements Mirion series EGPS detectors are manufactured using a proprietary technology allowing design for the best strip germanium detectors available worldwide. Mirion uses photolithography techniques – usually employed in microelectronics – to germanium diodes. Thus, all kinds of
Recent Developments in the Fabrication and Operation of Germanium Detectors
Although developed and first demonstrated more than 40 years ago, germanium detectors still represent the gold standard in detecting γ radiation for energies ranging from approximately 100 keV to 10 MeV. The combination of high-efficiency and excellent energy resolution and many recent technological developments have significantly increased the …
Advances in germanium detector technology
1. Introduction. High-purity germanium (HPGe) detectors [1] are frequently used to detect X- and gamma rays for energy spectroscopy and related fields because of their unparalleled resolving power and high photon detection efficiency. HPGe detectors have also always been attractive for imaging because of the same reasons, i.e. good …
BEGe™ Broad Energy Germanium Detectors | Mirion
The BEGe detector represents a breakthrough in this respect. The BEGe unit is designed with an electrode structure that enhances low energy resolution and is fabricated from select germanium having an impurity profile that improves charge collection (thus resolution and peak shape) at high energies. Indeed, this ensures good resolution and peak ...
Characterization of a Low Noise and Low Background …
The Large Enriched Germanium Experiment for Neutrinoless double beta Decay (LEGEND) is a ton-scale experimental program to search for the neutrinoless decay in the isotope 76Ge. In this framework, we have designed a new ASIC in the 0.35 μm CMOS technology, which will fulfill Ge-detector requirements.
Deciphering Radiation Alarms: Using High Purity …
Nuclear regulators, front line officers, and technical support professionals from 24 countries shared their experiences using High Purity Germanium (HPGe) detectors to maintain and strengthen nuclear …
A High-Efficiency Fieldable Germanium Detector Array
Historically, large germanium arrays for field applications have consisted of multiple detectors each housed in their own cryostat. In order to ruggedize the detectors for field use these cryostats have had additional support material introduced that significantly impacted cryogenic performance. This paper presents the development of a …
Germanium Detector Jobs, Employment | Indeed
Provides technical support in the production of germanium radiation detectors by growing detector-grade, single-crystal, ... (Head Office in Belgium), and Asia (Head Office in China) with over 6,000 employees worldwide. Vital Materials evolved rapidly since our founding, yet we remain focused in the areas of rare-metals-based advanced materials ...
Detector developments @ MIRION Workshop on …
Developments of HPGe wafers with micrometric pixels. Wafers are coupled to user ASICS (e.g. Medipix 3) Application: imaging or very high count rates Down to 55μm; arrays of chips possible Advantage of Germanium. High efficiency and stopping power High quality & large diameter wafers available. Flat field with much less flaws than other high Z ...
Germanium Detectors Market Size Odyssey: Exploring
The Germanium Detectors Market Size highlights the market's growth potential, projecting a value of around USD XX.X billion by 2031, up from USD XX. ... As governments worldwide prioritize ...
Advances in germanium detector technology
Abstract. This paper summarizes some of the recent advances in high-purity germanium (HPGe) detector technologies and their applications. These important advances were driven by the necessity to support the recent increase in applications, uses and requirements for germanium detectors. Performances of single and multi-element …
Neutrinoless Double Beta Decay with Germanium Detectors…
In the global landscape of neutrinoless double beta (0νββ) decay search, the use of semiconductor germanium detectors provides many advantages. The excellent energy resolution, the negligible intrinsic radioactive contamination, the possibility of enriching the crystals up to 88% in the 76Ge isotope as well as the high detection …
Advances in germanium detector technology
Introduction. High-purity germanium (HPGe) detectors [1] are frequently used to detect X- and gamma rays for energy spectroscopy and related fields because of …
Study of cosmogenic activation in 76Ge enriched germanium detectors …
The transportation of germanium is time-consuming and spans continents. It is necessary to apply a shield during the transportation processes to reduce the production of cosmogenic radionuclides [24, 25].Steel is an optimal material for transportation shielding, which can shield cosmic-ray neutrons well with a low production …
Germanium: From its discovery to SiGe devices
The discovery of the lithium drift process, which made possible the formation of p-i-n diodes with fully depletable i-regions several centimeters thick, led germanium to new prominence as the premier gamma-ray detector. The development of ultra-pure germanium yielded highly stable detectors which have remained unsurpassed in their …
