4h omega isoscalar monopole giant resonance in Pb-208 and resonance trapping

Ln the framework of the random phase approximation in the continuum we calc ulate the strength function of the 4 (h) over bar omega isoscalar monopole giant resonance in Pb-208. The one-particle continuum plays an important ro le in the formation of the structure of the strength function. Most interes ting is the appearance of some narrow resonances at large excitation energy . We discuss the results obtained from the point of view of resonance trapp ing which is known to appear due to the strong coupling of the resonance st ates via the continuum. [S0556-2813(9902704-1].