Timing properties and pulse shape discrimination of LAB-based liquid scintillator

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LI Xiao-Bo, XIAO Hua-Lin, CAO Jun, LI Jin, RUAN Xi-Chao and HENG Yue-Kun. Timing properties and pulse shape discrimination of LAB-based liquid scintillator[J]. Chinese Physics C, 2011, 35(11): 1026-1032. doi: 10.1088/1674-1137/35/11/009
LI Xiao-Bo, XIAO Hua-Lin, CAO Jun, LI Jin, RUAN Xi-Chao and HENG Yue-Kun. Timing properties and pulse shape discrimination of LAB-based liquid scintillator[J]. Chinese Physics C, 2011, 35(11): 1026-1032.  doi: 10.1088/1674-1137/35/11/009 shu
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Received: 2011-02-12
Revised: 2011-04-07
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Timing properties and pulse shape discrimination of LAB-based liquid scintillator

Abstract: Linear Alkyl Benzene (LAB) is a promising liquid scintillator solvent in neutrino experiments because it has many appealing properties. The timing properties of LAB-based liquid scintillator have been studied through ultraviolet and ionization excitation in this study. The decay time of LAB, PPO and bis-MSB is found to be 48.6 ns, 1.55 ns and 1.5 ns, respectively. A model can describe the absorption and re-emission process between PPO and bis-MSB perfectly. The energy transfer time between LAB and PPO with different concentrations can be obtained via another model. We also show that the LAB-based liquid scintillator has good (n, γ) and (α, γ) discrimination power.

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