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Optical properties of injection‐molded polystyrene scintillators. II. Distribution of dopants
Author(s) -
Martins J. A.,
Seixas J.,
Oliveira M. J.,
Maio A.,
Pouzada A. S.
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12120
Subject(s) - scintillator , differential scanning calorimetry , polystyrene , materials science , dopant , homogeneity (statistics) , molding (decorative) , yield (engineering) , composite material , analytical chemistry (journal) , polymer , polymer chemistry , optics , optoelectronics , chemistry , chromatography , doping , thermodynamics , physics , mathematics , statistics , detector
The distribution of fluorescing dye solutes in scintillating tiles for the Tilecal/Atlas project is assessed, and a link between the homogeneity of the dopant distribution and the optical yield and nonuniformity is established. The effect of the injection‐molding parameters on the dye distribution is also analyzed, as well as the actual dye incorporation into the scintillators. This incorporation has been assessed with a set of experiments performed with laboratory samples with controlled amounts of additives and with samples obtained from injection‐molded scintillators. Differential scanning calorimetry has been used to characterize the raw material and to establish a link between the thermophysical properties and the processing conditions, and it is proven to be a quite appropriate technique. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 2714–2718, 2003