Results 181 to 190 of about 641,323 (222)
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Thermally stimulated optical scintillations in preheated plastic scintillators
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992Abstract PVT-based plastic scintillators, irrespective of their radiation history, are found to exhibit thermally stimulated optical scintillations in the temperature interval 40–80°C following a preheat to 200°C or above and cooling to RT. Maximum scintillation activity occurs near 65°C, which is the glass transition temperature T g of the ...
M.S. Jahan +4 more
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Characteristics of Plastic Scintillators
The Journal of Chemical Physics, 1957Information on the light output of a group of organic solutes in polyvinyltoluene has been obtained. The primary solutes studied are p-terphenyl and 2-phenyl-5-(4-biphenylyl)-1,3,4 oxadiazole (PBD), the latter being the most efficient. Of the secondary solutes studied, 4,4′-diphenylstilbene and 2,5-dibiphenylyl oxazole (BBO) are the most efficient. The
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Bulletin of the Chemical Society of Japan, 1966
Abstract Fifteen anthracene derivatives have been synthesized, and their absorption and fluorescence spectra have been measured. The spectra will be discussed in this paper. According to the spectra, some of anthracene derivatives synthesized here are better wavelength shifters than the compounds previously described in the literature.
Tadao Nakaya +2 more
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Abstract Fifteen anthracene derivatives have been synthesized, and their absorption and fluorescence spectra have been measured. The spectra will be discussed in this paper. According to the spectra, some of anthracene derivatives synthesized here are better wavelength shifters than the compounds previously described in the literature.
Tadao Nakaya +2 more
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Mechanoluminescence of plastic scintillation counters
Journal of Luminescence, 2000Luminescence has been observed from the mechanical deformation of plastic scintillation materials. The light was recorded by means of a photomultiplier, and observed on a monitor by means of an intensified CCD camera. There is evidence for piezoluminescence as well as triboluminescence.
G.T. Reynolds, R.H. Austin
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Sub-Nanosecond Plastic Scintillators
IEEE Transactions on Nuclear Science, 1977Quenched plastic scintillators have been developed that yield much faster short decay components and greatly reduced long decay components compared to conventional plastic scintillators. The plastics are produced through the addition of selected quench agents to NE111 plastic scintillator that result in reduced total light output.
P. B. Lyons +7 more
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Preparation of Large Plastic Scintillators
Review of Scientific Instruments, 1957A process is described for the manufacture of disks of plastic scintillators weighing over 100 kg and composed of polystyrene (∼99%), p-terphenyl (∼1%), and POPOP (∼0.03%). The design and performance of two large plastic scintillation detectors for cosmic rays are discussed.
G. W. Clark, F. Scherb, W. B. Smith
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Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXII, 2020
In 2010, light scattering defects were observed in several fielded panels of poly(vinyltoluene) plastic scintillators that had experienced losses in radiation sensitivity. Pacific Northwest National Laboratory first deduced that the defects were caused by trapped water.
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In 2010, light scattering defects were observed in several fielded panels of poly(vinyltoluene) plastic scintillators that had experienced losses in radiation sensitivity. Pacific Northwest National Laboratory first deduced that the defects were caused by trapped water.
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Mass discrimination with plastic scintillators
Nuclear Instruments and Methods, 1962Abstract Mass discrimination of protons, deuterons and tritons, is shown to be possible from 8 to 50 MeV, by obtaining a suitable product of the outputs of d E /d x and E plastic scintillation detectors in a counter telescope. The non-linear energy response of the scintillator NE102 is taken into account in the calculation of the function which ...
R.J. Griffiths +3 more
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Radiation damage in plastic scintillators
Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference, 2002Summary form only given, as follows. Radiation damage in 408 and 412 plastic scintillators and two new plastic fibers has been studied by measuring, in the BNL (Brookhaven National Laboratory) radiation facility, the scintillation output during irradiation with /sup 60/Co gamma rays at room temperature. In all studies the luminescence intensity changes,
P.W. Levy, J.A. Kierstead
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Luminescence of plastic scintillators
Uspekhi Fizicheskih Nauk, 1959I M Rozman, S F Kilin
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