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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 | Staging and follow-up of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | OLMI P FALLAI C COLAGRANDE S | | 0，，03： | 1 |
| 3 | Combined modalities approach for localized adult extremity soft-tissue sarcoma显示文摘 | OLMI P CASALI P G | 2007 | Expert Rev Anticancer Ther2007，7，8： | 1 |
| 4 | Staging and followup of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Fallai C Colagrande S | 1995 | Int J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 5 | Computed tomogrphy is in nasopharyngeal carcinoma:Part II: Impact on survival显示文摘 | Cellai E Olmi P Chiavacci A | 1990 | Int J Radiat Oncol Biol Phys1990，19，5： | 1 |
| 6 | Staging and follow-up of nasopharyngeal carcinoma: magnetic resonance imaging versus computerized tomography 显示文摘 | OLMI P FALLAI C COLAGRANDE S | 1995 | lnt J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 7 | Staging and follow-up of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Fallai C Colagrande S | 1995 | Int J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 8 | Staging and follow-up of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Falla C Colagrande S | 1995 | Int J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 9 | Results of curative radiotherapy in oropharyngeal carcinomas显示文摘 | Olmi P Cellai E Chiavacci A | 1985 | Rays1985，11，1： | 1 |
| 10 | Staging and follow-up of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Falla C Colagrande S | 1995 | Int J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 11 | Stnging and follow-up of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Fallai C Colagrande S | 1995 | Int J Radial Oncol Biol Phys1995，32，3： | 1 |
| 12 | Staging and follow-up of nasopharyngeal carcinoma: magnetic resonance imaging versus computerized tomography 显示文摘 | Olmi P Fallai C Colagrande S | 1995 | Int J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 13 | Staging and following up nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Fallai C Colagrend S | 1995 | Int J Radiat Onco Biol Phys1995，32，3： | 1 |
| 14 | Staging and follow-up of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Fallai C Colagrande S | 1995 | Int J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 15 | Carcinoma of the nasopharynx: results of radiation therapy 显示文摘 | Cellai E Chiavacci P Olmi P | 1982 | Acta Radiol Oncol1982，21，4： | 1 |
| 16 | Staging and followup of nasopharyngeal carcinoma:magnetic resonance imaging versus computerized tomography显示文摘 | OLMI P FALLAI C COLAGRANDE S | 1995 | Int J Radiat Oncol Biol Phys1995，32，3： | 1 |
| 17 | Staging and follow-up of nasopharyngeal carcinoma: magnetic resonance imaging versus computerized tomography显示文摘 | Olmi P Fallai C Colagrande S | 1995 | Int J Radiation Biol Phys1995，32，3： | 1 |
| 18 | Altered fractionation schedules in radiotherapy of head and neck cancer a review显示文摘 | Fallai C Olmi P | 1992 | Tumori1992，78，3： | 1 |
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