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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 | A structured model of the anaerobic granule consortium 显示文摘 | GUIOT S R PAUSS A COSTERTON J W | 1991 | Water Science Technology1991，21，1： | 1 |
| 3 | Comparison of air and hydrogen peroxide oxygenated microbial fuel cell reactors显示文摘 | TARTAKOVSKY B GUIOT S R A | 2006 | Biotechnol Prog2006，22，1： | 1 |
| 4 | A surtetuerd model of the anae-robic granule consortium显示文摘 | GUIOT S R PAUSS A COSTERTON J W | 1992 | Water Sci Tech1992，25，： | 1 |
| 5 | Effects of oxygenation and upflow liquid velocity on a coupled anaerobic/ aerobic reactor system显示文摘 | Stephenson R J Patoine A Guiot S R | 1999 | Water Research1999，33，12： | 1 |
| 6 | Layered structure of bacterial aggregates produced in an upflow anaerobic sludge bed filter reator显示文摘 | Macleod A Guiot S R Costerton J W | 1990 | Appl Environ Microbiol1990，，56： | 1 |
| 7 | Layered structure of bacterial aggregates produced in an upflow anaerobic sludge bed and filter reactor 显示文摘 | MacLeod F A Guiot S R Costerton J W | 1990 | Applied Environmental Microbiology1990，56，6： | 1 |
| 8 | A structured model of the anaerobic granules consortium 显示文摘 | Guiot S R Pauss A Costerton J W | 1992 | Water Sci Technol1992，25，78： | 1 |
| 9 | Layeredstructure of bacterial aggregates produced in an upflow anaerobic sludge bed and filter reactor 显示文摘 | MacLeod F A Guiot S R Costerton J W | 1990 | Appl Environ Microbiol1990，56，： | 1 |
| 10 | Animal digestive strategies versusanaerobic digestion bioprocesses for biogas production fromlignocellulosic biomass显示文摘 | Bayané A Guiot S R | | 0，，01： | 1 |
| 11 | A Market Study on the Anaerobic Wastewater Treatment Systems显示文摘 | KASSAM Z A YERUSHALMI L GUIOT S R | 2003 | Water Air&Soil Pollution2003，143，14： | 1 |
| 12 | Layeredstructure of bacterial aggregates produced in an upflow anaerobic sludge bed and filter reactor 显示文摘 | MacLeod F A Guiot S R Costerton J W | 1990 | Appl Environ Microbiol1990，56，： | 1 |
| 13 | A structured model of anaerobic granule consortium显示文摘 | Guiot S R Panss A Costerton J W | 1992 | Wat Sci Tech1992，25，7： | 1 |
| 14 | Layered structure of bacterial aggregates produced in an upflow anaerobic sludge bed and filter reactor显示文摘 | MACLEOD F A GUIOT S R COSTERTON J W | 1990 | Appl Enuiron Microbiol1990，56，6： | 1 |
| 15 | Layered structure of bacterial aggregates produced in an upflow anaerobic sludge bed and filter reactor显示文摘 | MacLeod F A Guiot S R and Costerton J W | 1990 | Applied Environmental Microbiology1990，56，6： | 1 |
| 16 | A structured model of the anaerobic granules consortium显示文摘 | Guiot S R Pauss A Costerton J W | 1992 | Water Sci and Technol1992，25，78： | 1 |
| 17 | Effect of oxygenation and upflow liquid velocity on a coupled anaerobic/aerobic reactor system显示文摘 | Stephenson R J Patoine A Guiot S R | 1999 | Wat Res1999，12，： | 1 |
| 18 | Animal digestive strategies versus anaerobic di-gestion bioprocesses for biogas production from lignocellulosic biomass显示文摘 | BAYANE A GUIOT S R | 2011 | Reviews in Environmental Science and Bio-Technology2011，10，1： | 1 |
| 19 | Layered structure of bacterial aggregates produced in an upflow anaerobic sludge bed and filter reactor显示文摘 | MACLEOD F A GUIOT S R COSTERTON J W | 1990 | Applied and Environmental Micobiology1990，56，6： | 1 |
| 20 | A simple and low cost technique for determining the granulometry of upfiow anaerobic sludge blanket reactor sludge显示文摘 | LAGUNA A OUATTRA A GONZALEZ R O BARON O FAMA G I MAMOUNI R GUIOT S MONROY O MACARIE H | 1999 | Water Science Technology1999，40，8： | 1 |
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