title: New determination of the astrophysical S factor SE1 of the 12C(alpha,gamma)16O reaction.
abstract: A new measurement of the beta-delayed alpha decay of 16N has been performed using a set of high efficiency ionization chambers. Sources were made by implantation of a 16N beam, yielding very clean alpha spectra down to energies as low as 400 keV. Our data are in good agreement with earlier results. For the S factor S(E1), we obtain a value of 74 +/- 21 keV b. In spite of improvements in the measurement, the error in S(E1) remains relatively large because of the correlations among the fit parameters and the uncertainties inherent to the extrapolation.
authors.affiliation: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: X D
authors.initials: XD
authors.lastname: Tang
authors.forename: K E
authors.initials: KE
authors.lastname: Rehm
authors.forename: I
authors.initials: I
authors.lastname: Ahmad
authors.forename: C R
authors.initials: CR
authors.lastname: Brune
authors.forename: A
authors.initials: A
authors.lastname: Champagne
authors.forename: J P
authors.initials: JP
authors.lastname: Greene
authors.forename: A A
authors.initials: AA
authors.lastname: Hecht
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: L
authors.initials: L
authors.lastname: Jisonna
authors.forename: D
authors.initials: D
authors.lastname: Kahl
authors.forename: E F
authors.initials: EF
authors.lastname: Moore
authors.forename: M
authors.initials: M
authors.lastname: Notani
authors.forename: R C
authors.initials: RC
authors.lastname: Pardo
authors.forename: N
authors.initials: N
authors.lastname: Patel
authors.forename: M
authors.initials: M
authors.lastname: Paul
authors.forename: G
authors.initials: G
authors.lastname: Savard
authors.forename: J P
authors.initials: JP
authors.lastname: Schiffer
authors.forename: R E
authors.initials: RE
authors.lastname: Segel
authors.forename: S
authors.initials: S
authors.lastname: Sinha
authors.forename: B
authors.initials: B
authors.lastname: Shumard
authors.forename: A H
authors.initials: AH
authors.lastname: Wuosmaa