The γ decay from the high-lying states of Ce140 excited via inelastic scattering of O17 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 ΔE-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.

Pygmy dipole resonance in Ce 140 via inelastic scattering of O 17 / M. Krzysiek, M. Kmiecik, A. Maj, P. Bednarczyk, A. Bracco, F.C.L. Crespi, E.G. Lanza, E. Litvinova, N. Paar, R. Avigo, D. Bazzacco, G. Benzoni, B. Birkenbach, N. Blasi, S. Bottoni, S. Brambilla, F. Camera, S. Ceruti, M. Ciemała, G. De Angelis, P. Désesquelles, J. Eberth, E. Farnea, A. Gadea, A. Giaz, A. Görgen, A. Gottardo, J. Grȩbosz, H. Hess, R. Isocarte, A. Jungclaus, S. Leoni, J. Ljungvall, S. Lunardi, K. Mazurek, R. Menegazzo, D. Mengoni, C. Michelagnoli, B. Milion, A.I. Morales, D.R. Napoli, R. Nicolini, L. Pellegri, A. Pullia, B. Quintana, F. Recchia, P. Reiter, D. Rosso, M.D. Salsac, B. Siebeck, S. Siem, P. Söderström, C. Ur, J.J. Valiente Dobon, O. Wieland, M. Ziȩbliński. - In: PHYSICAL REVIEW C. - ISSN 2469-9985. - 93:4(2016 Apr), pp. 044330.1-044330.8.

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

A. Bracco;F.C.L. Crespi;R. Avigo;G. Benzoni;S. Bottoni;F. Camera;S. Ceruti;S. Leoni;R. Nicolini;L. Pellegri;A. Pullia;
2016

Abstract

The γ decay from the high-lying states of Ce140 excited via inelastic scattering of O17 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 ΔE-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.
nuclear and high energy physics
Settore FIS/04 - Fisica Nucleare e Subnucleare
Article (author)
File in questo prodotto:
File Dimensione Formato  
PhysRevC.93.044330.pdf

accesso aperto

Tipologia: Publisher's version/PDF
Dimensione 1.81 MB
Formato Adobe PDF
1.81 MB Adobe PDF Visualizza/Apri
PhysRevC.93.044330-accepted.pdf

accesso aperto

Tipologia: Post-print, accepted manuscript ecc. (versione accettata dall'editore)
Dimensione 4.51 MB
Formato Adobe PDF
4.51 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/488711
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 22
social impact