Light output quenching in response to deuterium-ions and alpha particles and pulse shape discrimination in deuterated trans-stilbene

J. Zhou, N. Gaughan, F. D. Becchetti, R. O. Torres-Isea, M. Febbraro, N. Zaitseva, A. Di Fulvio

Research output: Contribution to journalArticlepeer-review

Abstract

We characterized the light output response of a new 140 cm3 stilbene-d12 crystal up to 14.1 MeV neutron energies using a coincidence neutron scattering system. We also characterized its light output response to alpha particles in the 5 to 6 MeV energy range. The excellent PSD capability of the stilbene-d12 detector allowed us to select light pulses produced by particles of increasing ionization density, namely electrons, protons, deuterium-ions, and alpha particles. The measured fast decay component of the light pulses is increasingly quenched as the ionization density of the particle in the crystal increases. Consistently with this finding, the Birks’ quenching parameter of alpha particles is approximately 8.5 times larger compared to the quenching of deuterium ions, produced by neutron scattering interactions. The reported experimental characterization will allow high-fidelity modeling of the detector enabling its application for fast-neutron detection and spectroscopy in nuclear physics, radiation protection, nuclear security, and non-proliferation.

Original languageEnglish (US)
Article number166287
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume1027
DOIs
StatePublished - Mar 11 2022
Externally publishedYes

Keywords

  • Deuterated trans-stilbene
  • Ionization quenching
  • Light output response

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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