Solar Neutrino Observations / Day-Night Effect

作为其核心核反应的一部分，太阳产生中微子。中微子是电中性粒子，很少与物质相互作用。一旦产生，它们就会穿过太阳，飞向太空。这项建议的首席研究员(PI)打算利用新的快速计数设备和氯来测量地球上的太阳中微子通量，氯在吸收中微子时会被激发，因此可以测量太阳中微子的吸收速率。这是一个经典的中微子实验，PI已经在霍姆斯塔克金矿进行了大约20年。这项实验的最终目的是了解测量的太阳中微子流量和理论预测的太阳中微子流量之间的电流差异。

As part of its nuclear reactions in its core, the sun produces neutrinos. Neutrinos are electrically neutral particles that interact only very rarely with matter. Once produced, they pass through the sun and fly off into space. The Principal Investigator (PI) of this proposal intends to measure the solar neutrino flux on earth, making use of new fast counting equipment and of chlorine, which becomes excited when absorbing neutrinos and thereby allows the measurement of the rate of solar neutrino absorption. This is a classic neutrino experiment that the PI has been conducting for about two decades in the Homestake Gold Mine. The ultimate goal of this experiment is to understand the current differences between the measured and theoretically predicted solar neutrino flux.