E-viri
PDF
Recenzirano
Odprti dostop
-
Donaldson, L.M.; Bertulani, C.A.; Carter, J.; Nesterenko, V.O.; von Neumann-Cosel, P.; Neveling, R.; Ponomarev, V.Yu; Reinhard, P.-G.; Usman, I.T.; Adsley, P.; Brummer, J.W.; Buthelezi, E.Z.; Cooper, G.R.J.; Fearick, R.W.; Förtsch, S.V.; Fujita, H.; Fujita, Y.; Jingo, M.; Kleinig, W.; Kureba, C.O.; Kvasil, J.; Latif, M.; Li, K.C.W.; Mira, J.P.; Nemulodi, F.; Papka, P.; Pellegri, L.; Pietralla, N.; Richter, A.; Sideras-Haddad, E.; Smit, F.D.; Steyn, G.F.; Swartz, J.A.; Tamii, A.
Physics letters. B, 01/2018, Letnik: 776, Številka: CJournal Article
Proton inelastic scattering experiments at energy Ep=200 MeV and a spectrometer scattering angle of 0° were performed on 144,146,148,150Nd and 152Sm exciting the IsoVector Giant Dipole Resonance (IVGDR). Comparison with results from photo-absorption experiments reveals a shift of resonance maxima towards higher energies for vibrational and transitional nuclei. The extracted photo-absorption cross sections in the most deformed nuclei, 150Nd and 152Sm, exhibit a pronounced asymmetry rather than a distinct double-hump structure expected as a signature of K-splitting. This behaviour may be related to the proximity of these nuclei to the critical point of the phase shape transition from vibrators to rotors with a soft quadrupole deformation potential. Self-consistent random-phase approximation (RPA) calculations using the SLy6 Skyrme force provide a relevant description of the IVGDR shapes deduced from the present data.
