1110 K
19 pp.
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TitleReport on the Brookhaven Solar Neutrino Experiment
Author(s)Davis, R. Jr.; Evans, J. C. Jr.
Publication DateSeptember 22, 1976
Report NumberBNL-21837
Unique IdentifierACC0064
Other NumbersCONF-760973-1; OSTI ID: 7330079
Research OrgBrookhaven National Laboratory (BNL), Upton, NY (USA)
Contract NoE(30-1)-16
Other InformationInternational Seminar on Active Processes on the Sun and the Solar Neutrino Problem; 22 Sep 1976; Leningrad, USSR
Subject640104 -- Astrophysics & Cosmology -- Solar Phenomena; 640101 -- Astrophysics & Cosmology -- Cosmic Radiation; Neutrino Detection -- Experiment Planning; Solar Neutrinos -- Neutrino Detection; Argon 37; Chlorinated Aliphatic Hydrocarbons; Chlorine 37 Target; Electron Capture Decay; Neutrino Reactions; Research Programs
KeywordsArgon Isotopes; Basic Interactions; Beta Decay; Beta Decay Radioisotopes; Days Living Radioisotopes; Decay; Electron Capture Radioisotopes; Elementary Particles; Even-Odd Nuclei; Fermions; Halogenated Aliphatic Hydrocarbons; Interactions; Isotopes; Lepton Reactions; Leptonic Decay; Leptons; Light Nuclei; Massless Particles; Neutrinos; Nuclear Reactions; Nuclei; Organic Chlorine Compounds; Organic Compounds; Organic Halogen Compounds; Particle Decay; Planning; Radiation Detection; Radiations; Radioisotopes; Solar Radiation; Targets; Weak Interactions; Weak Particle Decay
Related Web PagesRaymond Davis, Jr., Solar Neutrinos, and the Solar Neutrino Problem
AbstractThis report is intended as a brief statement of the recent developments and results of the Brookhaven Solar Neutrino Experiment communicated through Professor G. Kocharov to the Leningrad conference on active processes on the sun and the solar neutrino problem. The report summarizes the results of experiments performed over a period of 6 years, from April 1970 to January 1976. Neutrino detection depends upon the neutrino capture reaction /sup 37/Cl(..nu..,e/sup -/)/sup 37/Ar producing the isotope /sup 37/Ar (half life of 35 days). The detector contains 3.8 x 10/sup 5/ liters of C/sub 2/Cl/sub 4/ (2.2 x 10/sup 30/ atoms of /sup 37/Cl) and is located at a depth of 4400 meters of water equivalent (m.w.e.) in the Homestake Gold Mine at Lead, South Dakota, U.S.A. The procedures for extracting /sup 37/Ar and the counting techniques used were described in previous reports. The entire recovered argon sample was counted in a small gas proportional counter. Argon-37 decay events were characterized by the energy of the Auger electrons emitted following the electron capture decay and by the rise-time of the pulse. Counting measurements were continued for a period sufficiently long to observe the decay of /sup 37/Ar.
1110 K
19 pp.
View Document 

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