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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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CLAMP-1.50. Detector clamp for 1.50" dipstick diameter. MOBIUS. Möbius Recycler. Includes 1.5" (38.1 mm) diameter collar. ORTEC's Mobius Recycler Condensing Liquid Nitrogen Cooling System provides "tried and tested" LN cooling of your radiation detector in a system where LN2 requires refilling approximately once every other year under ...
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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 variety of applications. Cryogenic cooling is required for germanium semiconductor radiation detectors. In order to support various counting ...
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Contactar. Potência do motor: 257, 261 kW. Altura de abertura: 760 mm. Largura de abertura: 1.070 mm. O J-1175 da Finlay® é uma britador de mandíbulas móvel sobre esteiras autopropelido, de alto desempenho e agressivo. Incorporando a britador Jaques JW42 da e um alimentador de grades vibratórias ...
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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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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
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The P-type coaxial (GEM) is the most commonly used HPGe in counting laboratories. The N-type coaxial (GMX) has extended lowenergy efficiency because of the thin contact and has slightly worse resolution specifications at higher energies than a GEM. The largest GEM detectors are about 75% higher than the largest GMX.
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Section snippets Large efficiency HPGe detectors. The effective interaction volume of the detector determines its efficiency. Advancement in spectroscopy grade HPGe crystal over the past few years has, therefore, been made in improving the crystallographic properties, lowering the impurity concentrations with greater axial uniformity and …
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Os revestimentos do britador de mandíbula são peças muito importantes das máquinas de britagem de mandíbula. Ambos os tipos de mandíbulas contêm diferentes tipos de revestimentos que esmagam os objetos abrasivos e duros. Estes são afiados o suficiente para esmagar as pedras mais duras e rregadias.
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For HPGe and CZT CCs in which all detector effect were included, the DCA was less than 3 mm for 75% and 68% of the detected gammas, respectively, and restricting gammas to those having energy greater than 2.0 MeV increased these percentages to 83% and 77% for HPGe and CZT, respectively. Distributions of the true gamma origins and the PCA after ...
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The possibility of operating HPGe detectors with thin amorphous germanium contacts directly in (hbox {LN}_2) and LAr has been demonstrated experimentally for the first time. Three mini planar detectors with such contacts made at LBNL and USD using USD HPGe crystals survived long-distance transportation, multiple thermal cycles in both ...
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Of course, no HPGe measurement is possible without a reliable cooling source. The "state-of-the-art" mechanical cooler used in the Falcon 5000 breaks new ground in mechanical cooling performance. Pulse Tube Cooling Technology With an electrically cooled HPGe detector, the main concerns are to not degrade the resolution of the
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Hyper-Pure Germanium detector (HPGe). Figure 1: Typical efficiency curve of a HPGe detector, obtained on Genie™ 2K software. The efficiency stated by the manufacturers of HPGe detectors is a relative efficiency, obtained by the ratio between the absolute full-energy peak efficiency (for the 1.33 MeV
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designed with the HPGe crystal integrated in the body of the device, the Aegis spectrometer is also available with an optional RDC cryostat. This feature separates the HPGe crystal from the rest of the unit enabling backshielding the crystal. As a result: • On top of the excellent HPGe gamma-photon efficiencies and
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The High Potential and Gifted Education Policy (HPGE) was announced by the Minister for Education on 4 June 2019. Implementation of the policy across the state is supported by an integrated professional learning program. The policy will be operating in all public schools in NSW from the 27 January 2021, aligning with the new four-year school ...
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CANBERRA manufactures large HPGe coaxial detectors fabricated from both P-type HPGe and N-type HPGe. For the purpose of this research a CANBERRA version of the P-type coaxial detector configuration will be used. Our primary P-type coaxial detector product is the Standard Electrode Germanium (SEGe), which comprises a right ...
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britador de martelos SHKX series. estacionário fino. Capacidade: 50 t/h - 550 t/h. Potência do motor: 90 kW - 800 kW. ... Contra-ataque, triturador de martelo, que é diferente das estruturas tradicionais, a série SHKX adopta cabeça de martelo modular/dupla liga de martelo, alta utilização de metal, poupando ...
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cylindrical n -type HPGe monocrystal with the dimensions of 26 mm diameter and 26 mm height. The HPGe crystal was procured from Umicore, Belgium [2 ] that had a impurity concentration of 0 .85 × 10 10 FPí DQG î 10 cm í at the top and bottom planes, respectively. The crystal was cut in to sam ple of 26 mm dia
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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, …
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Radium is a significant source of human radiation exposure both from natural sources (NORM, or Naturally Occurring Radioactive Material) and from technologically enhanced natural radioactive material (TENORM). Gamma analysis for 226Ra and 228Ra in water using high purity germanium (HPGe) detectors w …
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