ATTENZIONE: Lunedì 15 Luglio, dalle 13:00 alle 15:00 sarà effettuato un intervento di manutenzione su agenda.infn.it. Durante tale fascia oraria il servizio potrà risultare non raggiungibile.


ATTENTION: On Monday 15 July, from 1:00 pm to 3:00 pm, maintenance will be carried out on agenda.infn.it. During this time slot, the service may be unreachable.

May 13 – 17, 2019
Venice, Centro Culturale Don Orione Artigianelli
Europe/Rome timezone
NSD2019 Proceedings are now available online at www.epj-conferences.org

Study of high-energy fission and quasi-fission with inverse kinematics

Not scheduled
15m
SALA PALLADIO (Centro Culturale Don Orione Artigianelli)

SALA PALLADIO

Centro Culturale Don Orione Artigianelli

Speaker

G. Mantovani (INFN, Laboratori Nazionali di Legnaro, Legnaro (Padova), Italy, Universitá degli Studi di Padova, Padova, Italy, Universidade de Santiago de Compostela, Santiago de Compostela, Spain)

Description

Since its discovery, fission appeared as a complex process where different nuclear properties interplay shaping the characteristics of the emerging fission fragment distributions. In general, the influence of the shell effects is expected to decrease with increasing excitation energy of the fissioning nucleus, making the process driven by almost pure liquid-drop properties. Recently, some features in the total kinetics energy and in the N/Z distributions of the fragments, commonly associated with shell effects, came out in a series of experiments with high excitation energy fusion-fission reactions in inverse kinematics. Indeed, fusion-induced fission in inverse kinematics has proved to be a powerful tool to investigate nuclear fission, giving access to other observables with respect to a direct kinematics approach and thereby adding new information on the fission fragments.
The use of inverse kinematics with the VAMOS magnetic spectrometer at GANIL (France) coupled with the SPIDER telescope allows the identification of the fissioning system and permits to extract properties such as the total kinetics energy, and the mass and atomic number distributions of the emitted fragments. With these kind of measurement, the neutron-to-proton ratio of the fragments can also be obtained, which is an observable extremely sensitive to the shell structure effects, as it has been shown in previous experiments within the same campaign.
In the latest experiment of this campaign, a study of high-energy fission and 238U beam and a series of light targets was carried out by quasi-fission between a using the aforementioned technique, in order to probe the role of the shell structure in these processes. This contribution will be focused on the latest results and on the ongoing analysis of the yields of the fragment mass and charge distributions, as well as of the neutron-to-proton ratio, and their link with possible structure effects.

Primary authors

G. Mantovani (INFN, Laboratori Nazionali di Legnaro, Legnaro (Padova), Italy, Universitá degli Studi di Padova, Padova, Italy, Universidade de Santiago de Compostela, Santiago de Compostela, Spain) M. Caamaño (Universidade de Santiago de Compostela, Santiago de Compostela, Spain) D. Ramos (IPN Orsay, France, GANIL, Caen, France) F. Farget (GANIL, Caen, France, LPC, Caen, France) A. Lemasson (GANIL, Caen, France) D. Ackermann (GANIL, Caen, France) H. Álvarez Pol (Universidade de Santiago de Compostela, Santiago de Compostela, Spain) L. Audoin (IPN Orsay, France) E. Clement (GANIL, Caen, France) D. Durand (LPC, Caen, France) B. Fernández-Domínguez (Universidade de Santiago de Compostela, Santiago de Compostela, Spain) J. Frankland (GANIL, Caen, France) M. O. Fregeau (GANIL, Caen, France) D. Galaviz (Universidade de Lisboa, Lisboa, Portugal) E. Galiana (Universidade de Santiago de Compostela, Santiago de Compostela, Spain) A. Heinz (Chalmers University of Technology, Göteborg, Sweden) A. Henriques (Universidade de Lisboa, Lisboa, Portugal) B. Jacquot (GANIL, Caen, France) B. Jurado (CENBG, Gradignan, France) Y. Kim (IPN Orsay, France) P. Morfouace (GANIL, Caen, France) J. Piot (GANIL, Caen, France) M. Rejmund (GANIL, Caen, France) T. Roger (GANIL, Caen, France) C. Schmitt (IPHC, Strasbourg, France) P. Teubig (Universidade de Lisboa, Lisboa, Portugal) I. Tsekhanovich (CENBG, Gradignan, France)

Presentation materials

There are no materials yet.