Results 221 to 230 of about 7,781 (272)

Plastic scintillation dosimetry: optimal selection of scintillating fibers and scintillators.

Medical physics, 2005
Scintillation dosimetry is a promising avenue for evaluating dose patterns delivered by intensity-modulated radiation therapy plans or for the small fields involved in stereotactic radiosurgery. However, the increase in signal has been the goal for many authors.
Louis, Archambault, Jean, Arsenault, Luc, Gingras, A, Sam Beddar, René, Roy, Luc, Beaulieu   +5 more
openaire   +3 more sources

Aging of plastic scintillating fibers

Applied Optics, 1992
We have measured the rate of natural aging on a sample of plastic scintillating fibers that were not exposed to any adverse environment. The measurements were performed with a radioactive source that bombarded the fibers only during the period of measurement and with a readout that consisted of photomultipliers connected to scalars.
H, Blumenfeld, M, Bourdinaud
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A plastic scintillation counter prototype

Applied Radiation and Isotopes, 2015
A new prototype device for beta-ray measurement, a plastic scintillation counter, was assembled as an alternative device to liquid scintillation counters. This device uses plastic scintillation sheets (PS sheets) as a sample applicator without the use of a liquid scintillator.
Etsuko, Furuta, Takao, Kawano
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Response of plastic scintillator to gamma sources

Applied Radiation and Isotopes, 2020
In this study, we developed a method for directly determining the energy deposited over the entire energy range by monitoring the light output from a plastic scintillator under gamma irradiation. The relative light output was analyzed based on Birks' semi-empirical formula for ionization to obtain the quenching parameter as kB = 0.016 ± 0.0004 g cm-2 ...
Suffian M, Tajudin, Y, Namito, T, Sanami, H, Hirayama   +3 more
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Synthesis of plastic scintillation microspheres: Evaluation of scintillators

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013
Abstract The use of plastic scintillation microspheres (PSm) appear to be an alternative to liquid scintillation for the quantification of alpha and beta emitters because it does not generate mixed wastes after the measurement (organic and radioactive). In addition to routine radionuclide determinations, PSm can be used for further applications, e.g.
L.M. Santiago, H. Bagán, A. Tarancón, J.F. Garcia   +3 more
openaire   +1 more source

Preparation of plastic scintillators

The Soviet Journal of Atomic Energy, 1960
The apparatus and the direct method for preparing plastic scintillators by thermal polymerization in enclosed metallic containers are described. (R.V.J.)
E. E. Baroni, V. M. Shoniya
openaire   +1 more source

Ageing of plastic scintillators

Journal of Scientific Instruments, 1962
Results are presented which show that counter resolution is reduced when the plastic phosphor is left in the scintillation counter for a period of 18 months. The deterioration of the plastic phosphor depends greatly on the method of use in the counters.
C F Barnaby, J C Barton
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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, 1992
Abstract 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, C. Cox, D.R. Ermer, D.W. Jones, D.W. Cooke   +4 more
openaire   +1 more source

Mechanoluminescence of plastic scintillation counters

Journal of Luminescence, 2000
Luminescence 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
openaire   +1 more source

Sub-Nanosecond Plastic Scintillators

IEEE Transactions on Nuclear Science, 1977
Quenched 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, S. E. Caldwell, L. P. Hocker, D. G. Crandall, P. A. Zagarino, J. Cheng, G. Tirsell, C. R. Hurlbut   +7 more
openaire   +1 more source