Results from the Soviet-American gallium experiment

Technical Report · Tue Dec 31 00:00:00 EST 1991

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

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 ^[2]; Davis, R Jr; Lande, K ^[3]; Cherry, M L ^[4]; Kouzes, R T ^[5]

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1. AN SSSR, Moscow (USSR). Inst. Yadernykh Issledovanij
2. Los Alamos National Lab., NM (United States)
3. Pennsylvania Univ., Philadelphia, PA (United States)
4. Louisiana State Univ., Baton Rouge, LA (United States)
5. Princeton Univ., NJ (United States)

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: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 10125028
• Report Number(s): LA-UR--92-338; CONF-9110332--1; ON: DE92007414
• Country of Publication: United States
• Language: English

Related Subjects

662330
663420
663550
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
A = 59-89
EXPERIMENTAL DATA
GALLIUM 71 TARGET
GERMANIUM 71
LEPTON-INDUCED REACTIONS AND SCATTERING
NEUTRINO DETECTION
NEUTRINO REACTIONS
PHOTON AND CHARGED-LEPTON INTERACTIONS WITH HADRONS
SOLAR NEUTRINOS