INTERNATIONAL JOURNAL OF MODERN PHYSICS E, cilt.11, sa.6, ss.501-508, 2002 (SCI-Expanded)
The physics search potential of the recently proposed FEL circle times LHC collider is illustrated in the sample of the collective excitations of the Sm-154 nucleus. In this facility the accelerated fully ionized nuclei will "see" the keV energy FEL photons as a MeV energy laser beam. The main advantages compared to the traditional methods are the tunability, monochromaticity and high polarization of the FEL beam. The advantages result in higher statistics and the possibility to investigate individual levels.