Meßanordnung zur Untersuchung der Radiothermolumineszenz von Polymeren

Kunze, R.; Linke, E.

doi:10.1080/10256018308544944

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Experiments and Theoretical Models1

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1987

1988

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“…Only in the case of second-order reactions the effect of this approximation of the reaction function can be achieved also by a step function with the jump a t the activation energy E*. Thermoluminescence irradiation and measurement were carried out in an apparatus as described in [13]. The samples were irradiated with a n electron beam of energy E,-= 15 keV with a current of (2 to 3) x A.…”

Section: Experiments and Theoretical Modelsmentioning

confidence: 99%

Activation Energy Distribution in Poly-(Methylmethacrylate–Methacrylic Acid) Estimated by EPR and Thermoluminescence

Wünsche

Kunze

Wäsche

1987

Phys. Stat. Sol. (a)

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The activation energy distribution of the decay reactions of free radicals after γ‐irradiation in poly‐(methylmethacrylate–20% methacrylic acid) is estimated starting with electron paramagnetic resonance (EPR) measurements. This distribution can be compared with thermoluminescence (TL) results after electron irradiation of the same polymer. The main parts of the distribution functions represent the activation energies of 10.3 (TL) and 13 kJ/mol (EPR) and 26.8 (TL) and 22 kJ/mol (EPR) in the temperature regions of 120 to 125 K and 205 to 210 K, respectively.

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Section: Experiments and Theoretical Modelsmentioning

confidence: 99%