Characterization of stilbene's scintillation anisotropy for recoil protons between 0.56 and 10 MeV

Authors

Weldon, RA; Mueller, JM; Awe, C; Barbeau, P; Hedges, S; Li, L; Mishra, M; Mattingly, J

Abstract

The scintillation anisotropy of the single-crystal organic scintillator trans-stilbene was characterized for recoil protons between 0.56 and 10 MeV. The light output and pulse shape anisotropies were measured at 11 distinct recoil proton energies for over 168 recoil proton trajectories relative to the crystal axes. The measurements were performed using a neutron scatter kinematic measurement system and quasi-monoenergetic neutron beams produced by the tandem Van de Graaff accelerator at Triangle Universities Nuclear Laboratory (TUNL). The extensive recoil proton directional coverage enables interpolation over both energy and direction to form a complete response function of stilbene's scintillation anisotropy for the measured energy range.

Citation

Weldon, R. A., J. M. Mueller, C. Awe, P. Barbeau, S. Hedges, L. Li, M. Mishra, and J. Mattingly. “Characterization of stilbene's scintillation anisotropy for recoil protons between 0.56 and 10 MeV.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 977 (October 11, 2020). https://doi.org/10.1016/j.nima.2020.164178.

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