Overtones of Isoscalar Giant Resonances in medium-heavy and heavy nuclei

Abstract

A semi-microscopic approach based on both the continum-random-phase-approximation (CRPA) method and a phenomenological treatment of the spreading effect is extended and applied to describe the main properties (particle-hole strength distribution, energy-dependent transition density, partial direct-nucleon-decay branching ratios) of the isoscalar giant dipole, second monopole, and second quadrupole resonances. Abilities of the approach are checked by description of gross properties of the main-tone resonances. Calculation results obtained for the resonances in a few singly- and doubly-closed-shell nuclei are compared with available experimental data.

12 pages, 14 figures, submitted to Phys. Rev. C

References in corpus (6)

• On dipole compression modes in nuclei
• Isoscalar dipole mode in relativistic random phase approximation
• Isoscalar Giant Dipole Resonance and Nuclear Matter Incompressibility Coefficient
• Direct-decay properties of charge-exchange spin giant resonances
• On Properties of the Isoscalar Giant Dipole Resonance
• Isoscalar giant monopole resonance and its overtone in microscopic and macroscopic models

Cited by in corpus (6)

• Direct-decay properties of Giant Resonances
• Extension of continuum time-dependent Hartree-Fock method to proton states
• Investigation of the energy-averaged double transition density of isoscalar monopole excitations in medium-heavy mass spherical nuclei
• Proton decay from the isoscalar giant dipole resonance in ${}^{58}$Ni
• Direct proton decay of the isoscalar giant dipole resonance in 208Pb
• Effect of ground-state deformation on the Isoscalar Giant Monopole Resonance and the first observation of overtones of the Isoscalar Giant Quadrupole Resonance in rare-earth Nd isotopes