Naslov
Pygmy dipole resonance in Ce-140 via inelastic scattering of O-17

Autori
Krzysiek, M. ; Kmiecik, M. ; Maj, A. ; Bednarczyk, P. ; Bracco, A. ; Crespi, F. C. L. ; Lanza, E. G. ; Litvinova, E. ; Paar, Nils ; Avigo, R. ; Bazzacco, D. ; Benzoni, G. ; Birkenbach, B. ; Blasi, N. ; Bottoni, S. ; Brambilla, S. ; Camera, F. ; Ceruti, S. ; Ciemała, M. ; de Angelis, G. ; Désesquelles, P. ; Eberth, J. ; Farnea, E. ; Gadea, A. ; Giaz, A. ; Görgen, A. ; Gottardo, A. ; Grębosz, J. ; Hess, H. ; Isocarte, R. ; Jungclaus, A. ; Leoni, S. ; Ljungvall, J. ; Lunardi, S. ; Mazurek, K. ; Menegazzo, R. ; Mengoni, D. ; Michelagnoli, C. ; Milion, B. ; Morales, A. I. ; Napoli, D. R. ; Nicolini, R. ; Pellegri, L. ; Pullia, A. ; Quintana, B. ; Recchia, F. ; Reiter, P. ; Rosso, D. ; Salsac, M. D. ; Siebeck, B. ; Siem, S. ; Söderström, P.-A. ; Ur, C. ; Valiente-Dobon, J. J. ; Wieland, O. ; Ziębliński, M.

Izvornik
Physical review. C (2469-9985) 93 (2016), 4; 044330, 8

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
pygmy resonance

Sažetak
The γ decay from the high-lying states of 140Ce excited via inelastic scattering of 17O at a bombarding energy of 340 MeV was measured using the high-resolution AGATA- demonstrator array in coincidence with scattered ions detected in two segmented E-E silicon detectors. Angular distributions of scattered ions and emitted γ rays were measured, as well as their differential cross sections. The excitation of 1− states below the neutron separation energy is similar to the one obtained in reactions with the α isoscalar probe. The comparison between the experimental differential cross sections and the corresponding predictions using the distorted-wave Born approximation allowed us to extract the isoscalar component of identified 1− pygmy states. For this analysis the form factor obtained by folding microscopically calculated transition densities and optical potentials was used.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA