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Time response of water-based liquid scintillator from X-ray excitation

  • Author(s): Onken, DR;
  • Moretti, F;
  • Caravaca, J;
  • Yeh, M;
  • Orebi Gann, GD;
  • Bourret, ED
  • et al.

Published Web Location

https://doi.org/10.1039/D0MA00055H
No data is associated with this publication.
Abstract

Water-based liquid scintillators (WbLS) present an attractive target medium for large-scale detectors with the ability to enhance the separation of Cherenkov and scintillation signals from a single target. This work characterizes the scintillation properties of WbLS samples based on LAB/PPO liquid scintillator (LS). X-ray luminescence spectra, decay profiles, and relative light yields are measured for WbLS of varying LS concentration as well as for pure LS with a range of PPO concentrations up to 90 g L-1. The scintillation properties of the WbLS are related to the precursor LAB/PPO: starting from 90 g L-1PPO in LAB before synthesis, the resulting WbLS have spectroscopic properties that instead match 10 g L-1 PPO in LAB. This could indicate that the concentration of active PPO in the WbLS samples depends on their processing.

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