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GERDA followed in the footsteps of other 0νββ experiments using germanium; already more than 50 years ago (that is, around 1970), a 0.1 kg germanium detector was used by a Milano group in the first 0νββ decay search with a germanium detector. Since then, the sensitivity had been increased by a factor of one million. [1]
Schematic representation of the electric segmentation of an AGATA detector. The parameters of the detectors are: [1] Maximum cylinder size: 90.0 mm length, 40.0 mm radius. Coaxial hole size: 10.0 mm diameter, extension to 13.0 mm from the front face. Passivation layers: 1.0 mm at the back of the detector, 0.6 mm around the coaxial hole.
While silicon detectors cannot be thicker than a few millimeters, germanium can have a sensitive layer (depletion region) thickness of centimeters, and therefore can be used as a total absorption detector for gamma rays up to a few MeV. These detectors are also called high-purity germanium detectors (HPGe) or hyperpure germanium detectors.
The clover is the first composite Ge detector. It remains widely used in the detectors of particle accelerators, where multiple clover modules form an array all around the target to capture the rays. More complex composite detectors, such as the 7-element hexagonal cluster detector used on the Euroball, offer even better data. [2]
Spot prices of germanium ingot have jumped nearly a third in the past month to an all-time high of 13,250 yuan ($1,826.48) a kilogram (kg) on Wednesday, data from information pr.
Germanium is useful for monochromators for beamlines used in single crystal neutron scattering and synchrotron X-ray diffraction. The reflectivity has advantages over silicon in neutron and high energy X-ray applications. [90] Crystals of high purity germanium are used in detectors for gamma spectroscopy and the search for dark matter. [91]
GEODM (GErmanium Observatory for Dark Matter), with roughly 1500 kg of detector mass, has expressed interest in the SNOLAB "Cryopit" location. [ 20 ] Increasing the detector mass only makes the detector more sensitive if the unwanted background detections do not increase as well, thus each generation must be cleaner and better shielded than the ...
A painting bought at a garage sale in Minnesota is a previously unknown portrait by Dutch artist Vincent Van Gogh, according to a newly published expert analysis.. It was made by Van Gogh during ...
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