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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 23:08 |
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Conference: Bucharest University Faculty of Physics 2004 Meeting
Section: Polymer Physics
Title:
Radiation detectors based by polymer materials
Authors:
Margareta Cherestes, Codrut Cherestes, Livia Constantinescu
Affiliation:
Faculty of Physics, University of Bucharest, PO Box MG-11,
Magurele, Bucharest
E-mail
margareta.cherestes@dozimed.ro
Keywords:
radiation detectors,polymer
Abstract:
Scintillation counters making use of the property of certain chemical compounds to emit short light pulses after excitation by the passage of charged particles or by photons of high energy. These flashes of light are detected by a photomultiplier tube that converts the photons into a voltage pulse. The light emitted from the detector also can be collected, focussed and dispersed by a CCD detector.
The study of the evolution of the light emission and of the radiation damage under irradiation is a primary topic in the development of radiation hard polymer based scintillator.
Polymer scintillator thin films are used in monitoring radiation beam intensities and simultaneous counting of different radiations. Radiation detectors have characteristics which depend on: the type of radiation, the energy of radiation, and the material of the detector.
Three types of polymer thin films were studied: a polyviniltoluene based scintillator, fluorinated polyimide and PMMA.
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