Results from the Soviet-American gallium experiment

Conference · Tue Jan 01 04:00:00 EST 1991

DOI:https://doi.org/10.2172/10125028· OSTI ID:5748583

Abazov, A I; Anosov, O L; Faizov, E L; Gavrin, V N; Kalikhov, A V; Knodel, T V; Knyshenko, I I; Kornoukhov, V N; Mezentseva, S A; Mirmov, I N; Ostrinsky, A V; Pshukov, A M; Revzin, N E; Shikhin, A A; Timofeyev, P V; Veretenkin, E P; Vermul, V M; Zatsepin, G T ^[1]; Bowles, T J; Cleveland, B T ; Elliott, S R; O'Brien, H A; Wark, D L; Wilkerson, J F

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1. AN SSSR, Moscow (USSR). Inst. Yadernykh Issledovanij

A radiochemical {sup 71}Ga-{sup 71}Ge experiment to determine the primary flux of neutrinos from the Sun has begun operation at the Baksan Neutrino Observatory. The number of {sup 71}Ge atoms extracted from thirty tons of gallium was measured in five runs during the period of January to July 1990. Assuming that the extraction efficiency for {sup 71}Ge atoms produced by solar neutrinos is the same as from natural Ge carrier, we observed the capture rate to be 20 + 15/{minus}20 (stat) {plus minus} 32 (syst) SNU, resulting in a limit of less than 79 SNU (90% CL). This is to be compared with 132 SNU predicted by the Standard Solar Model.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5748583
• Report Number(s): LA-UR-92-338; CONF-9110332--1; ON: DE92007414
• Country of Publication: United States
• Language: English

Related Subjects

662330* -- Photon & Charged-Lepton Interactions with Hadrons-- (1992)
663420 -- Lepton-Induced Reactions & Scattering-- (1992-)
663550 -- Nuclear Mass Ranges-- A=59-89-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY RADIOISOTOPES
DATA
DAYS LIVING RADIOISOTOPES
DETECTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
GALLIUM 71 TARGET
GERMANIUM 71
GERMANIUM ISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEPTON REACTIONS
LEPTONS
MASSLESS PARTICLES
NEUTRINO DETECTION
NEUTRINO REACTIONS
NEUTRINOS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
RADIATION DETECTION
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SOLAR NEUTRINOS
SOLAR PARTICLES
SOLAR RADIATION
STELLAR RADIATION
TARGETS