Strahlungsschäden in Anthrazen und Plastikszintillator NE 102 A bei Beschuß mit Elektronen von 4 bis 10 keV
Plastic scintillators NE 102 A and antracene crystals were irradiated with electrons having energies between 4 and 10 keV. The fluorescent light was dispersed by a spectrograph and recorded on photographic plates. After excitation by electrons the plastic scintillator emits a phosphorescence band around 5630 Å. The radiation damage of plastic scintillator and of anthracene crystals is described by the same behaviour. An absorbed energy of 2.5 eV per molecule of the monomer vinyltoluene is required for plastic scintillators to reduce the fluorescence intensity by a factor of 2. For anthracene crystals 0.3 eV per molecule is required. In the emission spectrum of a damaged anthracene crystal new bands at 5630 and 6380 Å have been observed.