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Related Experiment Video

Updated: Jun 6, 2026

Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials
06:05

Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials

Published on: January 15, 2014

Novel polysiloxane-based scintillators for neutron detection.

S Carturan1, A Quaranta, T Marchi

  • 1INFN-Laboratori Nazionali di Legnaro, Viale dell'Università, 2, 35020 Legnaro, Italy. carturan@lnl.infn.it

Radiation Protection Dosimetry
|November 30, 2010
PubMed
Summary

New polysiloxane-based scintillators offer superior radiation resistance for harsh environments. These materials demonstrate promising neutron detection capabilities, comparable to commercial standards.

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Related Experiment Videos

Last Updated: Jun 6, 2026

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Area of Science:

  • Materials Science
  • Nuclear Instrumentation
  • Polymer Chemistry

Background:

  • Traditional plastic scintillators (polyvinyltoluene, polystyrene) have limitations in harsh environments.
  • Polysiloxane-based materials offer enhanced radiation resistance and thermal properties.

Purpose of the Study:

  • Synthesize and characterize cross-linked polydimethyl-co-diphenylsiloxane (PMPS) scintillators.
  • Incorporate ortho-carborane for thermal neutron sensitivity.
  • Evaluate the performance of these novel scintillators.

Main Methods:

  • Synthesis of PMPS with 22% diphenylsiloxane units, using 2,5-diphenyloxazole and Lumogen Violet as fluors.
  • Addition of 3% wt ortho-carborane for neutron detection.
  • Scintillation yield measurements using an alpha source and thermal neutron sources (Am-Be, LiF target).
  • Time-of-flight measurements for pulse discrimination.

Main Results:

  • PMPS scintillators achieved approximately 50% light yield compared to commercial EJ212.
  • Boron-loaded PMPS samples showed comparable thermal neutron detection to commercial EJ254.
  • Successful differentiation between neutron and gamma pulses using time-of-flight.

Conclusions:

  • Cross-linked PMPS scintillators are viable alternatives for harsh environments.
  • The addition of ortho-carborane effectively imparts thermal neutron sensitivity.
  • Developed scintillators show promising performance for radiation detection applications.