The timing and spectral characteristics of four highly efficient, slow fluors are presented for liquid scintillator solutions using linear alkylbenzene (LAB) as the primary solvent. The mixtures exhibit high light yields, but with rise times of several ns or more and decay times on the order of tens of ns. Consequently, such liquid scintillator mixtures can be used for effective separation of Cherenkov and scintillation components based on timing in large scale liquid scintillation detectors. Such a separation, showing high light yield and directional information, is demonstrated here on a bench-top scale for electrons with energies extending below 1 MeV. This could have significant consequences for the future development of such detectors for measurements of solar neutrinos and neutrinoless double beta decay (0$\nu \beta \beta$) as well as providing good directional information for elastic scattering events from supernovae neutrinos and reactor anti-neutrinos, amongst others.

对于使用线性烷基苯（LAB）作为主要溶剂的液体闪烁体溶液，提出了四种高效的慢速荧光的定时和光谱特性。混合物表现出高的光产率，但是上升时间为几ns或更多，衰减时间为几十ns。因此，基于大型液体闪烁检测器中的定时，这种液体闪烁器混合物可用于有效分离切伦科夫和闪烁组分。这种分离显示出高的光产量和方向信息，在这里以台式规模证明了电子的能量扩展到1 MeV以下。这可能会对此类用于测量太阳中微子和无中微子双β衰变的探测器的未来发展产生重大影响（0$\nu \beta \beta$），以及为超新星中微子和反应堆反中微子等的弹性散射事件提供良好的方向信息。