نتایج جستجو برای: bgo
تعداد نتایج: 257 فیلتر نتایج به سال:
No commercially available detector system can measure alpha, beta and gamma-rays at the same time separately with good efficiency, while being cost-effective, portable offering real-time monitoring. The main purpose of an alpha-beta-gamma would be for safety management nuclear decommissioning in industry. This idea a became more valuable, after Fukushima Japan, because waste contain fission pro...
The aim of this CP symmetry test in positronium is to measure the CP violation amplitude parameter CCP . This is derived from the measurement of the asymmetry in an angular distribution of the photons from the decay of the ortho-positronium in a magnetic field. The Standard Model prediction for CCP is a value of the order of 10 . Thus the observation of a larger CCP value would be signal of phy...
We propose a novel antiparticle detector. The gaseous antiparticle spectrometer (GAPS) effects particle identification through the characteristic X-rays emitted by antiparticles when they form exotic atoms in gases. GAPS obtains particularly high grasp (effective area–solid angle product) at lower particle energies, where conventional schemes are most limited in their utility. The concept is si...
Fundamental method-independent linuts on the timing performance of scintillation detectors are useful for identifying regimes in which either present timing methods are nearly optimal or where a considerable performance gain might be realized using better pulse processing techniques . Several types of lower bounds on mean-squared timing error (MSE) performance have been developed and applied to...
[1] The Gamma‐Ray Observation of Winter Thunderclouds (GROWTH) experiment, consisting of two radiation detection subsystems, has been operating since 2006 on the premises of Kashiwazaki‐Kariwa nuclear power plant located at the coastal area of Japan Sea. By February 2010, GROWTH detected seven long‐duration g ray emissions associated with winter thunderstorms. Of them, two events, obtained on 1...
We present the development of a four-channel low-cost hardware system for data acquisition, with application in dedicated nuclear medicine imagers. A 12 bit octal channel high-speed analogue to digital converter, with up to 65 Msps sampling rate, was used for the digitization of analogue signals. The digitized data are fed into a field programmable gate array (FPGA), which contains an interface...
Due to its intrinsic physical properties, high density and atomic number, fast scintillation, high scintillation light yield and low ionization potential, liquid xenon is an excellent medium for the tracking and the accurate energy measurement of γ-rays in the MeV energy domain. The use of liquid xenon associated to a micro gap structure device to measure 511 keV γ-rays in PET tomograph is unde...
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