Title :
Some emission characteristics of scintillating fibers for low energy X and γ-rays
Author :
Ikhlef, A. ; Skowronek, M.
Author_Institution :
Lab. des Plasmas Denses, Univ. Pierre et Marie Curie, Paris, France
fDate :
4/1/1994 12:00:00 AM
Abstract :
The characteristics of plastic scintillating fibers (PSF) are measured for X and γ photons in the energy range 5 keV to 1.5 MeV. It is shown that a very thin (50 μm) slit can be recorded with an array of very thin fibers having 50 μm diameter so that the main interaction mechanism is photoelectric absorption, instead of Compton scattering for low energy X-rays. The optical light attenuation, global efficiency and energy resolution have been measured for a system composed of 1 mm diameter fibers and a photomultiplier. An X-ray beam position detector is realized, using an intensified camera, allowing a 4% precision on the position. The effect of bending the fiber is also evaluated
Keywords :
X-ray apparatus; X-ray detection and measurement; X-ray spectroscopy; light absorption; scintillation counters; 1 mm; 5 keV to 1.5 MeV; 50 mum; X-ray beam position detector; emission; energy resolution; fibre bending; global efficiency; light attenuation; low energy γ rays; low energy X rays; photoelectric absorption; photomultiplier; plastic scintillating fibres; Electromagnetic wave absorption; Energy measurement; Energy resolution; Light scattering; Optical attenuators; Optical recording; Optical scattering; Particle scattering; Plastics; X-ray scattering;
Journal_Title :
Nuclear Science, IEEE Transactions on
