A multitude of discrete 2+ states in Sn124 with energy up to 5 MeV were populated and identified with the (O17, O′17γ) reaction at 340 MeV. Cross sections were compared with distorted wave Born approximation predictions and in general a good agreement was found. The measured energy and intensity distributions of the 2+ states are very similar to the predictions based on self-consistent density functional theory and extended QRPA approach accounting for multiphonon degrees of freedom. This provides evidence of the excitation of the pygmy quadrupole resonance in skin nuclei.
Multitude of 2+ discrete states in Sn 124 observed via the (O 17, O ′ 17 γ) reaction : Evidence for pygmy quadrupole states / L. Pellegri, A. Bracco, N. Tsoneva, R. Avigo, G. Benzoni, N. Blasi, S. Bottoni, F. Camera, S. Ceruti, F.C.L. Crespi, A. Giaz, S. Leoni, H. Lenske, B. Million, A.I. Morales, R. Nicolini, O. Wieland, D. Bazzacco, P. Bednarczyk, B. Birkenbach, M. Ciemała, G. De Angelis, E. Farnea, A. Gadea, A. Görgen, A. Gottardo, J. Grebosz, R. Isocrate, M. Kmiecik, M. Krzysiek, S. Lunardi, A. Maj, K. Mazurek, D. Mengoni, C. Michelagnoli, D.R. Napoli, F. Recchia, B. Siebeck, S. Siem, C. Ur, J.J. Valiente-Dobón. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 92:1(2015 Jul 31), pp. 014330.1-014330.7.
Multitude of 2+ discrete states in Sn 124 observed via the (O 17, O ′ 17 γ) reaction : Evidence for pygmy quadrupole states
L. PellegriPrimo
;A. BraccoSecondo
;R. Avigo;S. Bottoni;F. Camera;S. Ceruti;F.C.L. Crespi;A. Giaz;S. Leoni;R. Nicolini;
2015
Abstract
A multitude of discrete 2+ states in Sn124 with energy up to 5 MeV were populated and identified with the (O17, O′17γ) reaction at 340 MeV. Cross sections were compared with distorted wave Born approximation predictions and in general a good agreement was found. The measured energy and intensity distributions of the 2+ states are very similar to the predictions based on self-consistent density functional theory and extended QRPA approach accounting for multiphonon degrees of freedom. This provides evidence of the excitation of the pygmy quadrupole resonance in skin nuclei.
| File | Dimensione | Formato | |
|---|---|---|---|
|
Pellegri_Multitude_PhysRevC92_2015.pdf
accesso aperto
Tipologia:
Publisher's version/PDF
Dimensione
688.85 kB
Formato
Adobe PDF
|
688.85 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
