title: Determination of the 8B neutrino spectrum.
abstract: We have measured the total energy of the alpha particles following the beta decay of 8B by implanting 8B into a planar silicon surface barrier detector. Calibration was performed using alpha particles following the beta decay of 20Na, similarly implanted. The alpha spectrum is used to infer the 8B neutrino spectrum which is an important input in the interpretation of experiments that detect energetic neutrinos from the Sun. The alpha spectrum reported here is in disagreement with the previous best measurement which used two detectors in coincidence.
authors.affiliation: Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: W T
authors.initials: WT
authors.lastname: Winter
authors.forename: S J
authors.initials: SJ
authors.lastname: Freedman
authors.forename: K E
authors.initials: KE
authors.lastname: Rehm
authors.forename: I
authors.initials: I
authors.lastname: Ahmad
authors.forename: J P
authors.initials: JP
authors.lastname: Greene
authors.forename: A
authors.initials: A
authors.lastname: Heinz
authors.forename: D
authors.initials: D
authors.lastname: Henderson
authors.forename: R V F
authors.initials: RV
authors.lastname: Janssens
authors.forename: C L
authors.initials: CL
authors.lastname: Jiang
authors.forename: E F
authors.initials: EF
authors.lastname: Moore
authors.forename: G
authors.initials: G
authors.lastname: Mukherjee
authors.forename: R C
authors.initials: RC
authors.lastname: Pardo
authors.forename: T
authors.initials: T
authors.lastname: Pennington
authors.forename: G
authors.initials: G
authors.lastname: Savard
authors.forename: J P
authors.initials: JP
authors.lastname: Schiffer
authors.forename: D
authors.initials: D
authors.lastname: Seweryniak
authors.forename: G
authors.initials: G
authors.lastname: Zinkann
authors.forename: M
authors.initials: M
authors.lastname: Paul