نتایج جستجو برای: bgo
تعداد نتایج: 257 فیلتر نتایج به سال:
The operation of a gamma densitometer (GD) ID = 100 mm is considered; it intended for the diagnostics three-phase oil–water–gas flows using separationless method, when composition components determined by spectrometric analysis irradiation with two different photon energies. 241Am and 137Cs isotopes, installed in same housing, are used as sources, while detector made on basis BGO crystal 40 dia...
The energy resolution of the hadronic calorimeters is mostly limited by the fluctuation of the electromagnetic component in the development of the shower. The dual readout technique proposed by DREAM aims to correct event by event for this fluctuation measuring at the same time scintillation and Cherenkov light. In the last years the DREAM Collaboration has performed several tests to exploit th...
The selection of the GLAST burst monitor (GBM) by NASA will allow the investigation of the relation between the keV and the MeV-GeV emission from γ-ray bursts. The GBM consists of 12 NaI and 2 BGO crystals allowing a continuous measurement of the energy spectra of γ-ray bursts from ∼ 5 keV to ∼ 30 MeV. One feature of the GBM is its high time resolution for time-resolved γ-ray spectroscopy. More...
One of the scientific objectives of NASA’s Fermi Gamma-ray Space Telescope is the study of Gamma-Ray Bursts (GRBs). The Fermi Gamma-Ray Burst Monitor (GBM) was designed to detect and localize bursts for the Fermi mission. By means of an array of 12 NaI(Tl) (8 keV to 1 MeV) and two BGO (0.2 to 40 MeV) scintillation detectors, GBM extends the energy range (20 MeV to > 300 GeV) of Fermi’s main ins...
As part of a program to develop mobile robots for reactor environments, we are developing a radiation-imaging camera capable of operating in medium-intensity ( < 2 R/h), medium-energy ( < 8 MeV) gamma-ray fields . A systematic study of available detectors indicated the advisability of a high-Z scintillator. The raster-scanning camera uses a lead-shielded bismuth germanate (BGO) scmtillator (1 ....
Tm3+, Pr3+ co-doped Bi4Ge3O12 (Tm,Pr:BGO) crystals with various doping concentration were successfully grown using the micro-pulling-down (μ-PD) method. The use of co-doping for deactivating Tm3+ ions at 1.5 μm emission was investigated in BGO single crystal first time. effect on spectroscopic properties Tm,Pr:BGO demonstrated. In addition, fluorescence lifetime Tm3+:3F4 level 0.5 at.% Pr, 2 Tm...
The PADME apparatus was built at the Frascati National Laboratory of INFN to search for a dark photon (A?) produced via process e+e??A??. central component detector is an electromagnetic calorimeter composed 616 BGO crystals dedicated measurement energy and position final state photons. high beam particle multiplicity over short bunch duration requires reliable identification overlapping signal...
Exotic-deformation effects in 46 Ti nucleus were investigated by analysing the high-energy γ-ray and the α-particle energy spectra. One of the experiments was performed using the charged-particle multi-detector array ICARE together with a large volume (4 " ×4 ") BGO detector. The study focused on simultaneous measurement of light charged particles and γ-rays in coincidence with the evaporation ...
آنالیز مواد به روش فعال سازی نوترونی با استفاده از پرتو گامای آنی یا pgnaaدارای کاربردهای متنوعی در زمینه های مختلف تحقیقاتی، صنعتیو پزشکی است. در این پایان نامه به منظور مطالعه یک سیستم ساده آنالیز به روشpgnaa، از یک نمونه آب حاوی درصدهای مختلف nacl و یک چشمه نوترون am-be استفاده شده است را به عنوان نمونه انتخاب می کنیم. در این پژوهش ضمن تعیین هندسه مناسب برای مطالعه آنالیز به روشpgnaa ، از دو...
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