Studies of Doped Scintillator at BNL: A Generic Method for Neutrino Measurement

2 September 2005

proceedings article
Published by AIP Publishing in AIP Conference Proceedings

Vol. 785 (1) , 209-218
https://doi.org/10.1063/1.2060473

Abstract

Using multiple liquid‐scintillatior detectors at distances between 0.1 and 3 km from a nuclear reactor has the potential to determine the yet unknown neutrino‐mixing angle θ₁₃ via inverse β‐decay reaction on protons. The coincidence tag between the emitted prompt positron and delayed neutron provides a clear signature of anti‐neutrino event. The neutron capture signal is greatly enhanced by loading gadolinium into the liquid scintillator, due to the large (n, γ) cross sections of Gd isotopes. BNL has developed a procedure to synthesize Gd‐loaded scintillator with long attenuation length (> 10 m), high light output (> 95% of pseudocumene), and long‐tern stability (> 5 months to date). The purification and chemical quality of BNL‐synthesized Gd‐LS are discussed in the paper.

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