Spectroscopy far from regions of nuclear stability-a made-to-order challenge for the lohengrin spectrometer

The main task in future low-energy nuclear science is now clearly visible. In recent years experiments have revealed that present nuclear models, which turned out to be so successful near the stability line, can probably not be directly transposed to regions of very neutron-rich isotopes. In particular in lighter nuclei strong deviations from the “standard” nuclear physics view appeared; lighter neutronrich species have been shown to possess neutron halos and neutron skins, features which are not known near the valley of stability [1]. The accumulation of neutrons on the nuclear surface is in turn thought to be responsible for the alteration of standard parameters used to calculate the properties of nuclei; depths of the central potential, spinorbit force, pairing [2]. These parameters are crucial for the calculation of the nucleus. They determine where magic shells are located and how strongly the nucleus is bound. Recent measurements have shown evidence for the disappearance of shell structure ...