Topic
Scintillation
About: Scintillation is a research topic. Over the lifetime, 14022 publications have been published within this topic receiving 187694 citations.
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TL;DR: In this paper, a novel scintillation crystal (Ce0.01,Gd0.90,La0.09)2Si2O7 (ce:La-GPS) was grown by the floating zone method.
Abstract: A novel scintillation crystal (Ce0.01,Gd0.90,La0.09)2Si2O7 (Ce:La-GPS) was grown by the floating zone method, and its optical and scintillation properties were investigated. The emission wavelength of this material was 390 nm. Gamma ray excited pulse height and scintillation decay measurement showed that Ce:La-GPS had a high energy resolution (FWHM) of 5% at 662 keV, high light output of 36,000 photons/MeV and fast scintillation decay time of 46 ns.
45 citations
TL;DR: In this article, the authors measured the scintillation of ZnO:Ga by α-particles and showed that α particles show a greater light output than plastic organic scintillators with a decay time of 0.4 ± 0.15 nsec.
45 citations
07 Aug 2002
TL;DR: It is shown that as the scintillation becomes larger, the information bit energy-to-noise ratio, E/sub b//N/sub 0/, where the transfer function bound of turbo codes on the atmospheric channel diverges, also becomes larger.
Abstract: We propose two turbo-coded atmospheric (free-space) optical communication systems: a turbo-coded atmospheric optical subcarrier phase-shift keying (PSK) system and a turbo-coded atmospheric optical pulse position modulation (PPM) system. We obtain upper bounds on the bit-error rate (BER) for maximum-likelihood (ML) decoding of both turbo-coded systems on atmospheric optical channels where the effects of scintillation exist. We present iterative maximum a posteriori (MAP) probability decoding of the turbo-coded optical binary PPM (BPPM) system (see Yamamoto, N. and Ohtsuki, T., IEEE Global Telecom. Conf., GLOBECOM'01, 2001). We show that both turbo-coded atmospheric optical systems have better BER than convolutional coded atmospheric optical systems when the E/sub b//N/sub 0/ without scintillation is small. We also show that the turbo-coded atmospheric optical subcarrier PSK system has better BER than the turbo-coded atmospheric optical PPM systems. Moreover, we show that as the scintillation becomes larger, the information bit energy-to-noise ratio, E/sub b//N/sub 0/, where the transfer function bound of turbo codes on the atmospheric channel diverges, also becomes larger.
45 citations
21 Jun 2002-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, single crystals co-doped with Zr 4+ ions at concentrations of 0-200ppm were characterized by photo-, radio and thermo-luminescence, scintillation decay and light yield measurements.
Abstract: Set of YAlO 3 :Ce single crystals co-doped with Zr 4+ ions at concentrations of 0–200 ppm was characterized by photo-, radio- and thermo-luminescence, scintillation decay and light yield measurements. Positive influence of Zr co-doping was found, especially for the speed of scintillation response and lowering of TSL active traps.
45 citations
TL;DR: In this article, the use of liquid helium and neon as scintillators for neutrino detection is investigated, and it is shown that neutrinos can be detected by photomultiplier tubes at room temperature.
Abstract: The use of liquid helium and neon as scintillators for neutrino detection is investigated. Several unique properties of these cryogens make them promising candidates for real-time solar neutrino spectroscopy: large ultraviolet scintillation yields from ionizing radiation, transparency to their own scintillation light, and low levels of radioactive impurities. When neutrinos scatter from electrons in liquid helium or neon, ultraviolet light is emitted. The ultraviolet scintillation light can be efficiently converted to the visible with wavelength shifting films. In this way the neutrino-electron scattering events can be detected by photomultiplier tubes at room temperature. We conclude that the solar neutrino flux from the p+p→e++d+ν
e reaction could be characterized and monitored versus time using a 10 ton mass of liquid helium or neon as a scintillation target.
45 citations