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| 1 | Competition between fusion-evaporation and multifragmentation in central collisions in ^(58)Ni+^(48)Ca at 25A MeV显示文摘The experimental data concerning the58Ni+48Ca reaction at Elab(Ni)=25A MeV,collected by using the CHIMERA 4π device,have been analyzed in order to investigate the competition among different reaction mechanisms for central collisions in the Fermi energy domain.As a main criterion for centrality selection we have chosen the flow angle(flow) method,making an event-by-event analysis that considers the shape of events,as it is determined by the eigenvectors of the experimental kinetic-energy tensor.For the selected central events(flow >60°) some global variables,good to characterize the pattern of central collisions have been constructed.The main features of the reaction products were explored by using different constraints on some of the relevant observables,like mass and velocity distributions and their correlations.Much emphasis was devoted,for central collisions,to the competition between fusion-evaporation processes with subsequent identification of a heavy residue and a possible multifragmentation mechanism of a well defined(if any) transient nuclear system.Dynamical evolution of the system and pre-equilibrium emission were taken into account by simulating the reactions in the framework of transport theories.Different approaches have been envisaged(dynamical stochastic BNV calculations + sequential SIMON code,QMD,CoMD,etc.).Preliminary comparison of the experimental data with BNV calculations shows reasonable agreement with the assumption of sequential multifragmentation emission in the mass region of IMFs close to the heavy residues.Possible deviations from sequential processes were found for those IMFs in the region of masses intermediate between the mass of heavy residues and the mass of light IMFs.Further simulations are in progress.The experimental analysis will be enriched also by information obtained inspecting the IMF-IMF correlation function,in order to elucidated the nature of space-time decay property of the emitting source associated with events having the largest IMF multiplicity. | FRANCALANZA L ABBONDANNO U AMORINI F BARLINI S BINI M BOUGAULT R BRUNO M CARDELLA G CASINI G AGOSTINO M D' De FILIPPO V De SANCTIS J GERACI E GIUSSANI A GRAMEGNA F GUIOT B KRAVCHUK V La GUIDARA E LANZALONE G Le NEINDRE N MAIOLINO C MARINI P MORELLI L OLMI A PAGANO A PAPA M PIANTELLI S PIRRONE S POLITI G POGGI G PORTO F RUSSOTTO P RIZZO F VANNINI G VANNUCCI L | 2013 | Nuclear Science and Techniques2013，24，5： | 2 |
| 2 | The 'quenching and partitioning' process : Background and recent progress 显示文摘 | Speer J G Rizzo F C Matlock D K | 2005 | Materials Research2005，8，4： | 1 |
| 3 | The 'Quenching and Partitioning' Process:Background and Recent Pprogress显示文摘 | Speer J G Rizzo F C Matlock D K | 2005 | Materials Research2005，8，： | 1 |
| 4 | Partitioning of carbon from supersaturated plates of ferrite with application to steel processing and fundamentals of the bainite transformation显示文摘 | Speer J G Edmonds D V Rizzo F C | 2004 | Current Opinion in Solid State and Materials Science2004，8，： | 1 |
| 5 | The 'quenching and partitioning' process :Background and recent progress显示文摘 | Speer J G Rizzo F C Matlock D K | 2005 | Materials Research2005，8，4： | 1 |
| 6 | An integral equation approach to boundary value problem of classical elastostatics显示文摘 | Rizzo F J | 1967 | Quarterly of Applied Mathematics1967，25，： | 1 |
| 7 | Safety and cost-effectiveness of MIDCABG in high-risk CABG patients显示文摘 | BOYD W D NOVICK R J | 1998 | Ann Thorac Surg1998，66，： | 1 |
| 8 | What blindness can tell us about seeing again: merging neuroplasticity and neuro- prostheses显示文摘 | MEP ABET L B RIZZO J F AMEDI A | 2005 | Nat Rev Neurosei2005，6，1： | 1 |
| 9 | A method for stress determination in plane anisotropic elastic bodies 显示文摘 | Rizzo F J Shippy D J | 1970 | Journal of Composite Materials1970，4，1： | 1 |
| 10 | An integral equation approach to boundary value problem in classical elasticity 显示文摘 | Rizzo F J | 1967 | Quarterly of Applied Mathematics1967，25，： | 1 |
| 11 | CBX7controls the growth of normal and tumor-derived prostate cells by repressing the Ink4a/Arf locus显示文摘 | BERNARD D MARTINEZ-LEAL J F RIZZO S | 2005 | Oncogene2005，24，36： | 1 |
| 12 | An integral equation approach to boundary value problems of classical elastostatics显示文摘 | Rizzo F J | 1967 | Quart Appl Math1967，25，： | 1 |
| 13 | Partitioning of carbon from supersaturated plates of ferrite, with application to steel processing and fundamentals of the bainite transformation 显示文摘 | Speer J G Edmonds D V Rizzo F C et aI | 2004 | Current Opinion in Solid State and Materials Science2004，8，34： | 1 |
| 14 | The Effect of Water Vapour on the Oxidation of High Speed Steel, Kinetics and Scale Adhesion 显示文摘 | Monteiro M J Saunders S R J Rizzo F C | 2011 | (hid Met2011，75，12： | 1 |
| 15 | Optic Neuritis and Ischemic Optic Neuropathy: Overlapping Clinical Profiles显示文摘 | Rizzo J F Lesse Ⅱ S | 1991 | Arch Ophthalmal1991，109，： | 1 |
| 16 | A method for stress determination in plane anisotropic elastic bodies显示文摘 | Rizzo F J Shippy D J | 1970 | Composite Materials1970，4，： | 1 |
| 17 | Partitioning of carbon from supersaturated plates of ferrite,with application to steel processing and fundamentals of the bainite transformation显示文摘 | Speer J G Edmonds D V Rizzo F C | 2004 | Current Opinion in Solid State and Materials Science2004，8，34： | 1 |
| 18 | An encouraging first decade with major challenges a- head 显示文摘 | Rizzo J F | 2001 | Ophthalmology2001，，108： | 1 |
| 19 | Per- ceptual efficacy of electrical stimulation of human retina with a microeleetrode array during short-term surgical trials显示文摘 | RIZZO Ⅲ J F WYATT J LOEWENSTEIN J | 2003 | In- vest Ophthalmol Vis Sci2003，44，12： | 1 |
| 20 | The 'quenching and partitioning' process : Background and recent progress 显示文摘 | Speer J G Rizzo F C Matlock D K | 2005 | Materials Research2005，8，4： | 1 |
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