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

2) ((1) Moscow Engineering Physics Institute (State University); Groningen; I. V. Safonov (1); M. H. Urin (1; M. L. Gorelik (1); Moscow; Russia (2) Kernfysisch Versneller Institute; the Netherlands)

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

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arxiv nucl-th/0312062 v1 pith:LKHAMDEZ submitted 2003-12-16 nucl-th

M. L. Gorelik (1) , I. V. Safonov (1) , M. H. Urin (1 , 2) ((1) Moscow Engineering Physics Institute (State University) , Moscow , Russia (2) Kernfysisch Versneller Institute , Groningen , The Netherlands) This is my paper

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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.

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