The isoscalar transition strengths of the cluster states of 12C

Abstract

An elaborate folding model + coupled channel analysis of the inelastic α+12C scattering has been done using the inelastic form factors based on the nuclear transition densities predicted by the antisymmetrized molecular dynamics. The form factors for the observed isoscalar states of 12C were fine-tuned against the measured (α, α') cross sections to estimate the corresponding Eλ transition strengths. A significant E2 transition strength has been allocated for the second 2+ state of 12C from our consistent coupled channel analysis of the (α, α') data measured at Eα = 240 and 386 MeV. The Eλ transition strengths of the 0+2, 3-1, 0+3, and 1-1 states were also carefully deduced from the same folding model + coupled channel analysis.