Abstract

This report presents the scintillation properties and temperature dependent neutron and gamma responses of Cs <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> LiLaBr <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> elpasolite crystals with 0.5, 2, and 3.5% Ce doping. Cs <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> LiLaBr <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> has excellent scintillation light output proportionality, high light output, and good energy resolution. It also shows good light output temperature stability. Pulse shape differences between neutron and gamma excited pulses are analyzed as a function of temperature. Neutron-gamma pulse shape discrimination is possible in a wide temperature range from -10°C up to at least 140 °C.

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