Coumarins as wavelength shifters in polystyrene

Autor:	Anna Pla-Dalmau, G. W. Foster, Geoffrey Zhang
Rok vydání:	1995
Předmět:	Physics Nuclear and High Energy Physics business.industry Quantum yield Wavelength shifter Fluorescence Calorimeter chemistry.chemical_compound Wavelength chemistry Transmittance Optoelectronics Polystyrene business Instrumentation Visible spectrum
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 361:192-196
ISSN:	0168-9002
Popis:	A series of commercially available coumarins was tested as wavelength shifters in polystyrene for a tile/fiber calorimeter application. The objective was to find a compound that when incorporated in a polystyrene matrix absorbed in the 400–450 nm wavelength range, fluoresced in the green region of the visible spectrum ( λ em = 450−550 nm), and exhibited both short decay time and high quantum yield. Transmittance, fluorescence, and decay time determinations were performed in order to characterize each coumarin in polystyrene. Two coumarins (C510 and C515) were found to have faster decay times (∼8 ns vs. 12 ns) and superior light output (100–120%) compared to the commonly-used green wavelength shifter, K-27.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7de0227ddf7b63374a751258ef97cc79 https://doi.org/10.1016/0168-9002(95)00174-3 Zobrazit plný text záznamu Full Text from ScienceDirect