title: Gamow-teller strengths of the inverse beta transition 176Yb-->176Lu for spectroscopy of proton-proton and other sub-MeV solar neutrinos
abstract: Discrete Gamow-Teller (GT) transitions 176Yb-->176Lu at low excitation energies have been measured via the ( 3He,t) reaction at 450 MeV and at 0 degrees. For 176Yb, two low-lying states are observed, setting low thresholds Q(nu) = 301 and 445 keV for neutrino ( nu) capture. Capture rates estimated from the measured GT strengths, the simple two-state excitation structure, and the low Q(nu) in Yb-Lu indicate that Yb-based nu detectors are well suited for a direct measurement of the sub-MeV solar electron-neutrino ( nu(e)) spectrum including pp neutrinos.
authors.affiliation: Research Center for Nuclear Physics, Osaka University, Mihogaoka 10-1, Ibaraki, Osaka 657-0047, Japan and Advanced Science Research Center, JAERI, Tokai, Ibaraki, 319-1195 Japan.
authors.initials: M
authors.lastname: Fujiwara
authors.initials: H
authors.lastname: Akimune
authors.lastname: van Den Berg AM
authors.initials: M
authors.lastname: Cribier
authors.initials: I
authors.lastname: Daito
authors.initials: H
authors.lastname: Ejiri
authors.initials: H
authors.lastname: Fujimura
authors.initials: Y
authors.lastname: Fujita
authors.initials: CD
authors.lastname: Goodman
authors.initials: K
authors.lastname: Hara
authors.initials: MN
authors.lastname: Harakeh
authors.initials: F
authors.lastname: Ihara
authors.initials: T
authors.lastname: Ishikawa
authors.initials: J
authors.lastname: Janecke
authors.initials: T
authors.lastname: Kawabata
authors.initials: RS
authors.lastname: Raghavan
authors.initials: K
authors.lastname: Schwarz
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authors.lastname: Tanaka
authors.initials: T
authors.lastname: Yamanaka
authors.initials: M
authors.lastname: Yosoi
authors.initials: RG
authors.lastname: Zegers