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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 | Nutritional and environ- mental factors eontributing to microbial aggregation during upflow anaerobic sludge bed-filter (UBF) reactor start-up 显示文摘 | GUIOT S GORUR S AND KENNEDY K | 1988 | Anaerobic Di- gestion1988，，： | 1 |
| 3 | Influence of the starting microbial nucleus type on the anaerobic granulation dynamics显示文摘 | El-Mamouni R Leduc R Guiot S R | 1997 | Appl Microbiol Biotechnol1997，47，2： | 1 |
| 4 | Singlestage anaerobic/aerobic biotreatment of resin acid-containing wastewater 显示文摘 | Guiot S R Stephenson R J Frigon J C | 1998 | Water Sci Technol1998，38，4： | 1 |
| 5 | Nutritional and environmental factors contributing to microbial aggregation during upflow anaerobic sludge bed-filter(UBF) reactor start-up显示文摘 | | 1988 | Anaerobic Digestion1988，4753，： | 1 |
| 6 | Nutritional and Environmental Factors Contributing to Microbial Aggregati-on during Upflow Anaerobic Sludge Bed-Filter Reactor Start-up显示文摘 | | 1988 | Anaerobic Digestion1988，35，： | 1 |
| 7 | 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 |
| 8 | 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 |
| 9 | Reconstruction of Holocene precipitation patterns in Europe using pollen and lake-level data 显示文摘 | Guiot J Harrison S P Prentice I C | 1993 | Quaternary Research1993，40，2： | 1 |
| 10 | 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 |
| 11 | Liming impact on granules activity of the multiplate anaerobic reactor fMPAR) treating whey permeate 显示文摘 | EI-Mamouni R Guiot S Mercier P | 1995 | Bioprocess Engineering1995，12，： | 1 |
| 12 | Influence of Synthetic and Natural Polymers on the Anaerobic Granultion Process 显示文摘 | El-Mamouni R Leduc R Guiot S B | 1998 | Water Sci Tech1998，38，89： | 1 |
| 13 | Performance of An Upflow Anaerobic Reactor Com- bining A Sludge Blanket and A Filter Treating Sugar Waste显示文摘 | GUIOT S R | 1985 | Biotechnology and Bioengineering1985，27，6： | 1 |
| 14 | Influeneeof synthetic and natural polymers on the anaerobic granulation process 显示文摘 | EL-MAMOUNI R LEDUC R GUIOT S R | 1998 | Water Science and Technology1998，38，89： | 1 |
| 15 | Performance and biomass retention of an upflow anaerobic reactor combining a sludge blanket and filter显示文摘 | Guiot S R Van den Berg L | 1984 | Biotechnol Lett1984，6，： | 1 |
| 16 | The effect of re- al-time external resistance optimization on microbial fuel cell performance显示文摘 | Pinto R P Srinivasan B Guiot S R | 2011 | Water Research2011，45，4： | 1 |
| 17 | Enhanced dechlorination of Aroclor 1242 in an anaerobic continuous bioreactor 显示文摘 | Tartakovsky B Hawari J Guiot S R | 2000 | Water Research2000，34，： | 1 |
| 18 | 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 |
| 19 | Metastatic hemangiopericytoma presenting as an epidural spinal cord lesion显示文摘 | Brass SD Guiot MC Albrecht S | 2004 | Can J Neurol Sci2004，31，4： | 1 |
| 20 | Performance and biomass retention of an upflow anaerobic reactor combining a sludge blanket and filter显示文摘 | Guiot S R Van den Berg L | 1984 | Biotechnol Lett1984，6，6： | 1 |
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