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After Bahcall calculated the rate at which the detector should capture neutrinos, Davis's experiment turned up only one third of this figure. The experiment was the first to successfully detect and count solar neutrinos, and the discrepancy in results created the solar neutrino problem. The experiment operated continuously from 1970 until 1994.
A solar neutrino is a neutrino originating from nuclear fusion in the Sun's core, and is the most common type of neutrino passing through any source observed on Earth at any particular moment. [ citation needed ] Neutrinos are elementary particles with extremely small rest mass and a neutral electric charge .
Raymond Davis Jr. (October 14, 1914 – May 31, 2006) was an American chemist and physicist.He is best known as the leader of the Homestake experiment in the 1960s-1980s, which was the first experiment to detect neutrinos emitted from the Sun; for this he shared the 2002 Nobel Prize in Physics.
The first measurements of the number of solar neutrinos reaching the Earth were taken in the 1960s, and all experiments prior to SNO observed a third to a half fewer neutrinos than were predicted by the Standard Solar Model. As several experiments confirmed this deficit the effect became known as the solar neutrino problem.
Daya Bay Reactor Neutrino Experiment R ν e: ν e + p → e + + n: CC Gd-doped LAB Scintillation: 1.8 MeV Daya Bay, China 2011–2020 Double Chooz: Double Chooz Reactor Neutrino Experiment R ν e: ν e + p → e + + n: CC Gd-doped LOS: Scintillation: 1.8 MeV Chooz, France 2011–2017 DUNE: Deep Underground Neutrino Experiment AC, ATM, (S), SN ...
A chlorine detector in the former Homestake Mine near Lead, South Dakota, containing 520 short tons (470 metric tons) of fluid, was the first to detect the solar neutrinos, and made the first measurement of the deficit of electron neutrinos from the sun (see Solar neutrino problem).
The first experiment that detected the effects of neutrino oscillation was Ray Davis' Homestake experiment in the late 1960s, in which he observed a deficit in the flux of solar neutrinos with respect to the prediction of the Standard Solar Model, using a chlorine-based detector. [8] This gave rise to the solar neutrino problem.
The rate of neutrinos detected by this experiment disagreed with standard solar model predictions. Thanks to the use of gallium, it was the first experiment to observe solar initial pp neutrinos. Another important result was the detection of a smaller number of neutrinos than the standard model predicted (the solar neutrino problem). After ...