Microscopic study of the isoscalar giant resonances in 208Pb induced by inelastic alpha scattering

Abstract

The energetic beam of (spin and isospin zero) $\alpha$-particles remains a very efficient probe for the nuclear isoscalar giant resonances. In the present work, a microscopic folding model study of the isoscalar giant resonances in ${}^{208}$Pb induced by inelastic \aPb scattering at $E_{\mathrm{lab}}=240$ and 386 MeV has been performed using the (complex) CDM3Y6 interaction and nuclear transition densities given by both the collective model and Random Phase Approximation (RPA) approach. The fractions of energy weighted sum rule around the main peaks of the isoscalar monopole, dipole and quadrupole giant resonances were probed in the Distorted Wave Born Approximation analysis of inelastic \aPb scattering using the double-folded form factors given by different choices of the nuclear transition densities. The energy distribution of the $E0,E1$ and $E2$ strengths given by the multipole decomposition {analyses} of the \aap data under study are compared with those predicted by the RPA calculation.

Accepted for publication in Nuclear Physics A

References in corpus (2)

• Nuclear rainbow scattering and nucleus-nucleus potential
• Missing monopole strength of the Hoyle state in the inelastic $\alpha$+${}^{12}$C scattering

Cited by in corpus (5)

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• Hindrance of the excitation of the Hoyle state and the ghost of the $2_2^{+}$ state in ${}^{12}$C
• Folding model analysis of the inelastic $\alpha {+}^{12}$C scattering at medium energies, and the isoscalar transition strengths of the cluster states of ${}^{12}$C
• Very low-energy nucleon + 16O coupled-channel scattering: results with a phenomenological vibrational model
• Optical model potentials for deuteron scattering off ${}^{24}$Mg, ${}^{28}$Si, ${}^{58}$Ni, ${}^{90}$Zr, ${}^{116}$Sn, and ${}^{208}$Pb at $\sim$100 MeV/nucleon