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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 | Quality improvement guidelines for percutaneous nephrosto-my显示文摘 | Ramchandani P Cardella J F Grassi C J | 2001 | J Vasc Interv Radiol2001，12，11： | 1 |
| 3 | Image - guided tumor ablation: standardization of terminology and re- porting criteria 显示文摘 | GOLDBERG SN GRASSI C J CARDELLA JF | 2009 | J Vasc Interv Radiol2009，20，7： | 1 |
| 4 | Image-guided tumor ablation: standardization of terminology and reporting criteria显示文摘 | Goldberg SN Grassi C J Cardella JF | 2009 | J Vase Interv Radial2009，20，7： | 1 |
| 5 | Quality improvements guidelines for percutaneous nephrostomy显示文摘 | Ramchandani P Cardella JF Grassi C J | | 0，，11： | 1 |
| 6 | Compsring freshman and senior engineering design processes:an indepth follow-up study显示文摘 | ATMAN C J CARDELLA M E TURNS J | 2005 | Design Studies2005，26，4： | 1 |
| 7 | Quality improvement guidelines for percutaneous permanent inferior vena cava filter placement for the prevention of pulmonary embolism 显示文摘 | Grassi C J Swan TL Cardella JF | 2001 | J Vase Interv Radiol2001，12，2： | 1 |
| 8 | Delayed graft function and the risk for death with a functioning graft显示文摘 | Tapiawala S N Tinckam K J Cardella C J | 2010 | J Am Soc Nephrol2010，21，1： | 1 |
| 9 | Quality improvement guidelines for the prevebtion of pulmonary embolism 显示文摘 | Grassi C J Swan TI Cardella JF | 2001 | J Vasc Interv Radiol2001，12，2： | 1 |
| 10 | Quality improvement guidelines tor percutancous nephrostomy 显示文摘 | Ramchandani P Cardella J F Grassi C J | 2001 | J Vasc Interv Radiol2001，12，11： | 1 |
| 11 | Image-guided tumor ablation: standardization of terminology and reporting criteria 显示文摘 | Goldberg SN Grassi C J Cardella JF | 2005 | Radiology2005，235，： | 1 |
| 12 | Quality improvement guidelines for percutaneous permanent inferior vena cava filter placement for the prevention of pulmonary embolism 显示文摘 | Grassi C J Swan TL Cardella JF | 2003 | Vasc Interv Radiol2003，14，92： | 1 |
| 13 | Quality improvement guidelines for percutaneous permanent inferior vena cava filter placement for the prevention of pulmonary embolism显示文摘 | Grassi C J Swan T L Cardella J F | 2003 | J Vasc Interv Radiol2003，47，92： | 1 |
| 14 | Quality improvement guidelines for percutaneous permanent inferior vena cava filter placement for the prevention of pulmonary embolism 显示文摘 | Grassi C J Swan T L Cardella J F | 2003 | J Vasc Interv Radiol2003，14，92： | 1 |
| 15 | Quality improvementguidelines for Percutaneous nephrostomy显示文摘 | Ramchandani P Cardella JF Grassi C J | 2001 | J Vasc interv Radiol2001，12，： | 1 |
| 16 | Delayed graft function and risk for death with a functioning graft 显示文摘 | Tapiawala SN Tinckam K J Cardella C J | 2010 | J Am Soc Nephrol2010，21，1： | 1 |
| 17 | Image-guided tumor ablation : standardization of terminology and reporting criteria 显示文摘 | Goldberg SN Grassi C Cardella J | 2005 | Radiology2005，235，3： | 1 |
| 18 | Image-guided tumor ablation : standardization of terminology and reporting criteria显示文摘 | Goldberg SN Grassi C J Cardella JF | 2005 | Radiology2005，235，3： | 1 |
| 19 | Quality improvement guidelines for precutaneous permanent inferior vena cava filter placement for the prevention of pulmonary embolism 显示文摘 | Grassi C J Swan TL Cardella JF | 2001 | J Vasc Interv Radiol2001，12，1： | 1 |
| 20 | Delayed Graft Function and the Risk for Death with a Functioning Graft显示文摘 | Tapiawala S N Tinckam K J Cardella C J | 2010 | Journal of the American Society ofNephrology2010，21，1： | 1 |
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