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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 | Optimal location of control valves in pipe networks by genetic algorithm显示文摘 | REIS L F R PORTO R M | 1997 | ASCE Journal of Water Resources Planning and Management1997，123，6： | 1 |
| 3 | Red blood cells promote survival and cell cycle progression of human peripheral blood T cells independently of CD58/LFA-3 and heme compounds显示文摘 | Fonseca A M Pereira C F Porto G | 2003 | Cellular Immunology2003，224，1： | 1 |
| 4 | Drug-eluting balloon in peripheral intervention for below the knee angioplasty evaluation (DEBATE- BTK):a randomized trial in diabetic patients with critical limb ischemia显示文摘 | Liistro F Porto I Angioli P | 2013 | Circulation2013，128，6： | 1 |
| 5 | Optimal location of control valves in pipe networks by genetic algorithm显示文摘 | Reis L F R Porto R M Chaudhry F H | 1997 | Water Resource Planning Management1997，123，6： | 1 |
| 6 | Comprehensive exercise training improves ventilatory muscle function and reduces dyspnea perception in patients with COPD显示文摘 | Cortopassi F Castro AA Porto EF | 2009 | Monaldi Arch Chest Dis2009，71，3： | 1 |
| 7 | Medication advertisements in the illustra- ted press and the image of Brazilian nurses ( 1920- 1925) 显示文摘 | Porto F Santos TC | 2010 | Rev Esc Enferm USP2010，44，3： | 1 |
| 8 | Liquid - liquid extraction of proteases from fermented broth by PEG/citrate aqueous two-phase system 显示文摘 | Porto T S Silva G M M Porto C S Cavalcanti M T H Neto B B Lima F J L Converti A Porto A L F Pessoa J A | 2008 | Chemical Engineering and Processing2008，47，4： | 1 |
| 9 | Early changes induced by short-term low-dose cadmium exposure in rat ventral and dorsolateral prostates[J3显示文摘 | Laeorte L M Delella F K Porto Amorim E M | | 0，，11： | 1 |
| 10 | Transmission resonances on metallic gratings with very narrow slits显示文摘 | Porto J A Garcia -Vidal F J Pendry J B | 1999 | Physical Review Letters1999，83，14： | 1 |
| 11 | Inflammatory gene polymorphisms and isehemic heart disease: review of population association studies显示文摘 | Andreotti F Porto I Crea F | 2002 | Heart2002，，87： | 1 |
| 12 | Experimental Behaviour of Reinforced Concrete Elements Repaired with Polymer-modified Cementicious Mortar显示文摘 | PELLEGRINO C DA PORTO F MODENA C | | 0，，02： | 1 |
| 13 | Electroplastic effect in cop- per subjected to low density electric current显示文摘 | Silveira V L A Porto M F S | 1981 | Scripta Metal1981，15，8： | 1 |
| 14 | Mate tea inhibits in vitro pancreatic lipase activity and has hypolipidemie effect on high-fat diet-induced obese mice显示文摘 | Martins F Noso T M Porto V B | 2010 | Obesity (Silver Spring)2010，18，1： | 1 |
| 15 | Cancer and thromboembolism : from biology to clinics显示文摘 | Castelli R Porto F | 2006 | Minerva Med2006，97，2： | 1 |
| 16 | Transmission resonances on metallic gratings with very narrow slits显示文摘 | Porto J A Garcia-Vidal F J Pendry J B | | 0，，14： | 1 |
| 17 | Thrombus aspiration in ST el-evationmyocardial infarction: comparative efficacy in patients treated early and late afteronsetof symptoms显示文摘 | DeVitaM Burzotta F Porto I | 2010 | Heart2010，96，： | 1 |
| 18 | Inflammatory gene polymorphisms and ischaemie heart disease:review of population association studies显示文摘 | Andreotti F Porto I Crea F | 2002 | Heart2002，87，2： | 1 |
| 19 | Inflammation and immune response in acute aortic dissection显示文摘 | del Porto F Proietta M Tritapepe L | 2010 | Ann Med2010，42，8： | 1 |
| 20 | Abudance analysis of barium and mild barium stars显示文摘 | SMILJANIC R PORTO G F SILVA L | 2007 | Astronomy and Astrophysics2007，486，2： | 1 |
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