A new measurement of the dynamical dipole emission was performed in the system O16+Sn116 at 12 MeV/nucleon. These data, together with those measured at 8.1 MeV/nucleon and 15.6 MeV/nucleon on the same system, provide the dependence of the dynamical dipole total emission yield on the beam energy. The energy removed by preequilibrium charged particles emission was directly measured and this made possible the direct estimation of the compound nucleus excitation energy. The experimental results show a weak increase of the dynamical dipole total yield with beam energy and they are in agreement both in trend and in absolute values with the predictions of the theoretical model based on the Boltzmann-Nordheim-Vlasov approach. The measured γ-ray angular distribution has a dipole character but with a strong quenching probably owing to the rotation of the dipolar axis during the fusion and thermalization processes. © 2014 American Physical Society.

Measurement of dynamical dipole γ -ray emission in the N/Z -asymmetric fusion reaction O 16 + Sn 116 at 12 MeV/nucleon / A. Giaz, A. Corsi, S. Barlini, V.L. Kravchuk, O. Wieland, M. Colonna, F. Camera, A. Bracco, R. Alba, G. Baiocco, L. Bardelli, G. Benzoni, M. Bini, N. Blasi, S. Brambilla, M. Bruno, G. Casini, M. Ciemala, M. Cinausero, F.C.L. Crespi, M. D'Agostino, M. Degerlier, M. Di Toro, F. Gramegna, M. Kmiecik, S. Leoni, C. Maiolino, A. Maj, T. Marchi, K. Mazurek, S. Myalski, B. Million, D. Montanari, L. Morelli, R. Nicolini, G. Pasquali, S. Piantelli, A. Ordine, G. Poggi, V. Rizzi, C. Rizzo, S. Sambi, D. Santonocito, V. Vandone. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 90:1(2014).

Measurement of dynamical dipole γ -ray emission in the N/Z -asymmetric fusion reaction O 16 + Sn 116 at 12 MeV/nucleon

A. Giaz;A. Corsi;F. Camera;A. Bracco;F.C.L. Crespi;S. Leoni;D. Montanari;V. Vandone
2014

Abstract

A new measurement of the dynamical dipole emission was performed in the system O16+Sn116 at 12 MeV/nucleon. These data, together with those measured at 8.1 MeV/nucleon and 15.6 MeV/nucleon on the same system, provide the dependence of the dynamical dipole total emission yield on the beam energy. The energy removed by preequilibrium charged particles emission was directly measured and this made possible the direct estimation of the compound nucleus excitation energy. The experimental results show a weak increase of the dynamical dipole total yield with beam energy and they are in agreement both in trend and in absolute values with the predictions of the theoretical model based on the Boltzmann-Nordheim-Vlasov approach. The measured γ-ray angular distribution has a dipole character but with a strong quenching probably owing to the rotation of the dipolar axis during the fusion and thermalization processes. © 2014 American Physical Society.
Nuclear and High Energy Physics
Settore FIS/04 - Fisica Nucleare e Subnucleare
http://harvest.aps.org/bagit/articles/10.1103/PhysRevC.90.014609/apsxml
Article (author)
File in questo prodotto:
File Dimensione Formato  
PhysRevC.90.014609.pdf

accesso aperto

Tipologia: Post-print, accepted manuscript ecc. (versione accettata dall'editore)
Dimensione 652.56 kB
Formato Adobe PDF
652.56 kB Adobe PDF Visualizza/Apri
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/2434/248008
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 14
social impact