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Overtones of isoscalar giant resonances in medium-heavy and heavy nuclei

By ML Gorelik, IV Safonov and MH Urin

Abstract

A semimicroscopic approach based on both the continuum random-phase-approximation 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. The abilities of the approach are checked by description of the 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

Topics: DIPOLE COMPRESSION MODES, MONOPOLE RESONANCE, CHARGE-EXCHANGE, PB-208, PROTONS, DECAY
Year: 2004
DOI identifier: 10.1103/physrevc.69.054322
OAI identifier:
Provided by: NARCIS
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