Halo-induced large enhancement of soft dipole excitation of 11 Li observed via proton inelastic scattering

  title={Halo-induced large enhancement of soft dipole excitation of 11 Li observed via proton inelastic scattering},
  author={Junki Tanaka},
  journal={Physics Letters B},
  • J. Tanaka
  • Published 25 August 2017
  • Physics
  • Physics Letters B
Abstract Proton inelastic scattering off a neutron halo nucleus, 11 Li, has been studied in inverse kinematics at the IRIS facility at TRIUMF. The aim was to establish a soft dipole resonance and to obtain its dipole strength. Using a high quality 66 MeV 11 Li beam, a strongly populated excited state in 11 Li was observed at E x = 0.80 ± 0.02 MeV with a width of Γ = 1.15 ± 0.06 MeV . A DWBA (distorted-wave Born approximation) analysis of the measured differential cross section with isoscalar… Expand
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