Properties of the first 1/2+ state in 9Be from electron scattering and astrophysical implications

Details Properties of the first 1/2+ state in 9Be from electron scattering and astrophysical implications Properties of the first 1/2+ state in 9Be from electron scattering and astrophysical implications

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1090..283b&link_type=abstract

CAPTURE GAMMA-RAY SPECTROSCOPY AND RELATED TOPICS: Proceedings of the 13th International Symposium on Capture Gamma-Ray Spectros

Astronomy and Astrophysics

Astrophysics

Scattering Of Atoms And Molecules, Giant Resonances, Stellar Clusters And Associations

Scientific paper

Spectra of the 9Be(e,e') reaction have been measured at the S-DALINAC at an electron energy E0 = 73 MeV and scattering angles of 93° and 141° with high energy resolution up to excitation energies Ex = 8 MeV. The astrophysically relevant 9Be(γ,n) cross sections have been extracted from the (e,e') data. The resonance parameters of the first 1/2+ state in 9Be have been derived in a one-level R-matrix approximation resulting in a resonance energy ER = 1.748(6) MeV and a resonance width ΓR = 274(8) keV These parameters are in mutual agreement with those obtained from the latest real photon experiments but with improved uncertainties.

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