Results from the Soviet-American gallium experiment

Autor: A.I. Abazov, O.L. Anosov, E.L. Faizov, V.N. Gavrin, A.V. Kalikhov, T.V. Knodel, I.I. Knyshenko, V.N. Kornoukhov, S.A. Mezentseva, I.N. Mirmov, A.V. Ostrinsky, A.M. Pshukov, N.E. Revzin, A.A. Shikhin, P.V. Timofeyev, E.P. Veretenkin, V.M. Vermul, G.T. Zatsepin, T.J. Bowles, B.T. Cleveland, S.R. Elliott, H.A. O`Brien, D.L. Wark, J.F. Wilkerson, R. Jr. Davis, K. Lande, M.L. Cherry, R.T. Kouzes
Rok vydání: 1991
Předmět:
Popis: 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.
Databáze: OpenAIRE