Radiothermoluminescence and Transitions in Polymers |
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Page 27
... Luminescence Centers . Spectral Distribution of Thermoluminescence Emission In many cases , a polymer does not itself give any significant luminescence and the observed emission is then from an impurity or additive molecules . Although ...
... Luminescence Centers . Spectral Distribution of Thermoluminescence Emission In many cases , a polymer does not itself give any significant luminescence and the observed emission is then from an impurity or additive molecules . Although ...
Page 28
... luminescence centers can also be achieved by soaking the samples in a solvent and subsequently applying phosphorescence spectroscopy [ 22 ] . This process also may be used to introduce new , known luminescence centers into the polymer ...
... luminescence centers can also be achieved by soaking the samples in a solvent and subsequently applying phosphorescence spectroscopy [ 22 ] . This process also may be used to introduce new , known luminescence centers into the polymer ...
Page 51
... luminescence centers . The recombination of electrons with positive holes or with luminescence centers may result in the emission of photons , in which case the sample is said to exhibit thermoluminescence . Therefore , when light ...
... luminescence centers . The recombination of electrons with positive holes or with luminescence centers may result in the emission of photons , in which case the sample is said to exhibit thermoluminescence . Therefore , when light ...
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Common terms and phrases
activation energy annealing atactic atoms blend changes charge Charlesby Chem chemical cis-polybutadiene components concentration constant cooling copolymer cross-linking crystal decay decrease density depends dielectric distribution dose E/kT electron affinity electron traps emission entropy equilibrium evaluation excited molecules factor first-order fluorescence fraction free volume frequency frequency factor glass glass-transition temperature glow curve glow peak grafting heating increase INTENSITY relative units interaction interfacial intersystem crossing interzonal ionization irradiation isotactic kinetic linear low-temperature luminescence centers LUMINESCENCE INTENSITY relative Macromolecules material maxima maximum mechanical melting method molecular motion molecules Nikolskii nuclear magnetic resonance observed occur oxygen phase phosphorescence Phys polybutadiene polyethylene samples polyisobutylene polypropylene polystyrene position quenching radiation radicals radiothermoluminescence reaction recombination relaxation transitions room temperature secondary relaxation semicrystalline semicrystalline polymers spectra spectroscopy structure temperature thermal thermodynamic thermoluminescence thermoluminescence peaks tion transition temperature trapped electrons untrapping vibrational vinyl vulcanization whereas Zlatkevich
References to this book
Polymer Surfaces and Interfaces II, Volume 2 W. J. Feast,H. S. Munro,R. W. Richards Snippet view - 1993 |