论文标题
低能量太阳中微子和中微子双β衰减的慢流量闪烁体
Slow-Fluor Scintillator for Low Energy Solar Neutrinos and Neutrinoless Double Beta Decay
论文作者
论文摘要
通过一系列模拟探索了使用慢速流体液体闪烁体研究低能太阳中微子和中微子双β衰减（0NBB）的潜力。假定的一级荧光的荧光模型的特性类似于腺苷，最近用来证明在1 MeV左右的能量下的Cherenkov分离。此处的结果表明，大型检测器中的定向重建要比其他方法先前提出的更好，从而可以更好地识别低能太阳中微子。这些研究表明，使用当前可用的光电倍增管的覆盖率低至30％的探测器可能能够对CNO太阳中微子通量进行测量，其精确度优于10％（足以区分金属型模型），并获得了几个Kiloton年的暴露。在此处的0NBB研究中，基于角度分布的机制分离机制的能力很弱，但是使用这种技术的太阳中微子背景的排斥可能可能接近10倍的端点能量，以实现由太阳能方向定义的角度半球中2.5 MEV的端点能量。
The potential for using slow-fluor liquid scintillators to study low energy solar neutrinos and neutrinoless double beta decay (0nbb) is explored through a series of simulations. The fluorescence model assumed for the primary fluor has characteristics similar to acenaphthene, recently used to demonstrate Cherenkov separation at energies around 1 MeV. Results here indicate notably better directional reconstruction in large-scale detectors than has previously been suggested by other approaches, allowing better identification of low energy solar neutrinos. These studies indicate that a detector with as little as ~30% coverage using currently available photomultiplier tubes could be able to make a measurement of the CNO solar neutrino flux to a precision of better than 10% (enough to distinguish metallicity models) with a few kiloton-years of exposure. In terms of 0nbb studies here suggest that the ability to separate mechanisms based on angular distributions is weak, but that the rejection of solar neutrino backgrounds with such a technique might potentially approach a factor of 10 for endpoint energies near 2.5 MeV in the angular hemisphere defined by the solar direction.
