Development of large size fast timing and radiation resistant PVT-based plastic scintillator detector.

Autor: Alex, Lizbeth, Paulraj, Rajesh, Sonu, Tyagi, Mohit
Zdroj: Journal of Materials Science: Materials in Electronics; Jan2023, Vol. 34 Issue 2, p1-11, 11p
Abstrakt: The fabrication and the scintillation properties of a polyvinyltoluene-based plastic scintillator doped with 2,5-diphenyloxazole (PPO) and 1,4-bis[2-(phenyloxazolyl)]-benzene (POPOP) are presented. The XRD structural analysis and SEM-EDS technique confirm the amorphous nature of the material. The high optical transparency of 88% over the entire visible region, the refractive index of 1.57 near to that of glass and the emission wavelength at 425 nm make the synthesized PVT scintillator well suitable for radiation detection and measurements. The scintillation lifetime of 4 ns under 137Cs exposure revealed its utilization as fast timing detector for Time-of-Flight measurements. The fabricated scintillator shows a maximum light output of 65% of stilbene crystal. Scintillation light loss shown for 60Co irradiations with radiation doses of 1 Mrad and 1.98 Mrad evinced the good radiation hardness characteristic of the material, bringing about a best candidate for high radiation level environments. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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