Results 231 to 240 of about 7,781 (272)

Characteristics of Plastic Scintillators

The Journal of Chemical Physics, 1957
Information 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
openaire   +1 more source

Plastic Scintillators. III. The Synthesis of Some Anthracene Derivatives as Wavelength Shifters in Plastic Scintillators

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, Takanori Tomomoto, Minoru Imoto   +2 more
openaire   +1 more source

Optical measurement of fogged scintillator plastics and development of non-fogging plastic scintillator formulations

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.
openaire   +1 more source

Preparation of Large Plastic Scintillators

Review of Scientific Instruments, 1957
A 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
openaire   +1 more source

Radiation damage in plastic scintillators

Conference Record of the 1991 IEEE Nuclear Science Symposium and Medical Imaging Conference, 2002
Summary 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
openaire   +1 more source

Time response of plastic scintillators

Nuclear Instruments and Methods, 1974
Abstract Time-response characteristics of eight commercial plastic scintillators have been studied. Samples were excited by 50 ps electron or bremsstrahlung pulses. Sampling techniques were used to record the signal from a fast vacuum photodiode. Effects of surface preparation on time response were studied.
P.B. Lyons, J. Stevens
openaire   +1 more source

Mass discrimination with plastic scintillators

Nuclear Instruments and Methods, 1962
Abstract 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, K.M. Knight, C.J. Candy, A.J. Cole   +3 more
openaire   +1 more source

New types of plastic scintillators

Nuclear Instruments and Methods in Physics Research, 1982
Abstract Two types of scintillators based on a copolymer of methylmethacrylate and styrene and a crosslinking polystyrene were developed. These have as good mechanical properties as Plexipop. The results on some of more than a hundred samples of different compositions examined on their light output, attenuation lenght and decay time showed that ...
T. Inagaki, R. Takashima
openaire   +1 more source

Development of plastic scintillation fiber

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1987
Abstract We developed a plastic scintillation fiber (PSF) with a light-attenuation length as long as 2.8 m which was applied for a calorimeter. The performance of a calorimeter made of PSF and lead with a new method of fabrication is presented.
Fumihiko Takasaki, Hitoshi Saito, Tohru Shimizu, Saburo Kondo, Osamu Shinji   +4 more
openaire   +1 more source

Characteristics of plastic scintillator granules

Journal of Applied Spectroscopy, 1967
Methods are described for measuring the absorption coefficient of the material, the absorption coefficient of a layer of granules, and the scintillation performance. The theory of light diffusion in a scattering medium is used and is compared with experiment.
Yu. A. Tsirlin, V. A. Shvets, A. Ya. Berlovskii, V. M. Solomonov   +3 more
openaire   +1 more source