Characterization of protonated and deuterated Tetra-Phenyl Butadiene Film in a Polystyrene Matrix

TL;DR

This study investigates how deuteration and annealing affect the fluorescence spectrum and conversion efficiency of TPB films in polystyrene, finding no spectral differences but noting efficiency reduction due to annealing.

Contribution

It provides new insights into the effects of deuteration and annealing on TPB film performance in VUV to visible light conversion.

Findings

Deuteration does not alter fluorescence spectrum shape.

Annealing reduces conversion efficiency to about 75%.

No significant spectral differences observed between films.

Abstract

We study the effect of deuteration and annealing on the fluorescence spectrum shape and VUV to visible conversion efficiency of TPB films in a polystyrene matrix with input light from 120 to 220 nm. We observed no discernible difference in the fluorescence spectrum shape between any of the films. The deuterated film performed equally well compared to the standard one in terms of conversion efficiency, but annealing seems to degrade this efficiency to roughly 75% of its non annealed value at all wavelengths studied.