Continuing Observation of Solar Neutrino Emission with the Homestake Chlorine Neutrino Detector

在最近的每一个突出的天体物理学问题的清单上， 世纪是“太阳中微子问题”，或赤字 与预期的内部中微子相比， 太阳的模型太阳中微子的测量是使用全氯- 在南达科他州的霍姆斯特克煤矿，的 溶液中的氯原子被转化为氩-37 同位素的太阳中微子，然后提取测量 中微子发射率探测到的中微子不足 是二十多年前在霍姆斯特克首次发现的它 导致了其他几个中微子的形成 俄罗斯、日本和意大利的检测设施。这个奖项将 支持Homestake实验的运作， 再加两年。

On every list of outstanding astrophysical problems of the late twentieth century is the "solar neutrino problem," or the deficit of detected neutrinos compared to those expected from interior models of the Sun. Solar neutrinos are measured using perchloro- ethylne (cleaning fluid) in Homestake Mine in South Dakota. The chlorine atoms in this solution are converted to an argon-37 isotope by solar neutrinos and are then extracted to measure the rate of neutrino emission. The deficit in detected neutrinos was first discovered at Homestake over twenty years ago. It has led since to the construction of several other neutrino detection facilities in Russia, Japan, and Italy. This award will support the operations of the Homestake Experiment for an additional two years.