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The Homestake experiment (sometimes referred to as the Davis experiment or Solar Neutrino Experiment and in original literature called Brookhaven Solar Neutrino Experiment or Brookhaven 37 Cl (Chlorine) Experiment) [1] was an experiment headed by astrophysicists Raymond Davis, Jr. and John N. Bahcall in the late 1960s.
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 .
Detailed observations of the neutrino spectrum from more advanced neutrino observatories produced results which no adjustment of the solar model could accommodate: while the overall lower neutrino flux (which the Homestake experiment results found) required a reduction in the solar core temperature, details in the energy spectrum of the ...
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 ...
This is consistent with the experimental observations of low energy solar neutrinos by the Homestake experiment (the first experiment to reveal the solar neutrino problem), followed by GALLEX, GNO, and SAGE (collectively, gallium radiochemical experiments), and, more recently, the Borexino experiment, which observed the neutrinos from pp (< 420 ...
The experiment has measured the solar neutrino flux in 168 extractions between January 1990 and December 2007. The result of the experiment based on the whole 1990-2007 set of data is 65.4 +3.1 −3.0 (stat.) +2.6 −2.8 (syst.) SNU. This represents only 56%-60% of the capture rate predicted by different Standard Solar Models, which predict 138 ...
Borexino is a deep underground particle physics experiment to study low energy (sub-MeV) solar neutrinos.The detector is the world's most radio-pure liquid scintillator calorimeter and is protected by 3,800 meters of water-equivalent depth (a volume of overhead rock equivalent in shielding power to that depth of water).
The neutrino is absorbed in the reaction and an electron is produced. Solar neutrinos have energies smaller than the mass of muons and tau leptons, so only electron neutrinos can participate in this reaction. The emitted electron carries off most of the neutrino's energy, on the order of 5–15 MeV, and is detectable. The proton which is ...