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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 | Maternal corticotropin-releasing hormone levels in the early third trimester predict length of gestation in human pregnancy显示文摘 | WADHWA P D PORTO M GARITE T J | 1998 | Am J Obstet Gynecol1998，179，4： | 1 |
| 3 | Ultrasound-assisted extraction coupled with under vacuum distillation of flavour compounds from spearmint (carvone-rich) plants: Comparison with conventional hydrodistillation 显示文摘 | Porto C D Decorti D | 2009 | Ultrasonics sonochemistry2009，16，6： | 1 |
| 4 | Anode and cathode materials characterization for a microbial fuel cell in half cell configuration 显示文摘 | PANT D VAN BOGAERT G PORTO CARRERO C | 2011 | Water Sci Technol2011，63，10： | 1 |
| 5 | Performance of low-cost ejectors 显示文摘 | Neto I E L Porto R D M | 2004 | Journal of Irrigation and Drainage Engineering2004，130，2： | 1 |
| 6 | Botulinum toxin type A for aging face and aesthetic uses 显示文摘 | Hexsel C Hexsel D Porto MD | 2011 | Dermatol Ther2011，24，1： | 1 |
| 7 | Placental Corti- cotropin-Releasing Hormone (CRH), Spontaneous Preterm Birth, and Fetal Growth Restriction: A Prospective Investiga- tion显示文摘 | Wadhwa P D Garite T J Porto M | 2004 | Am J Obstet Gynecol2004，191，4： | 1 |
| 8 | Comorbidity of obsessivecompulsive disorders and personality disorders:a Brazilian controlled study显示文摘 | ALBINA R T PORTO D ALBERTO J | 1995 | Psychopathology1995，28，6： | 1 |
| 9 | Static and dynamic processor scheduling disciplines in heterogeneous parallel architectures显示文摘 | Menasce D A Saha D Porto S C D S | 1995 | Journal of Parallel and Distributed Computing1995，28，： | 1 |
| 10 | The al- kaloid brachycerine is induced by ultraviolet radiation and is a singlet oxygen quencher 显示文摘 | Gregianini T S Da Silveiral V C Porto D D | 2003 | Photochem Photobiol2003，78，5： | 1 |
| 11 | Nonlinear propagation in Kerr media of beams with unequal transverse widths显示文摘 | CROSIGNANI B PORTO P D | 1993 | Opt Lett1993，18，17： | 1 |
| 12 | Maternal eorticotropinreleasing hormone leveles in the early third trimester predct length of gestation in human pregnancy显示文摘 | Wadhwa P D Porto M Garite T J | 1998 | Am J Obstet Gynecol1998，179，： | 1 |
| 13 | Production of organic acids: expanding the markets显示文摘 | Sauer M Porto D Mattanovich D | 2008 | Trends Biotechnol2008，26，： | 1 |
| 14 | Synthesis,surf ace-active properties,and antimicrobial activities of new neutral and cationic trimeric surfactants显示文摘 | MURGUIA M C CRISTALDI M D PORTO A | | 0，，01： | 1 |
| 15 | Granuh:ytie sarcoma in children 显示文摘 | Porto L Kieslieh M Schwabe D | 2004 | Neuroradiology2004，46，： | 1 |
| 16 | Differentiation between high and low grade tumours in paediatric patients by using appar- ent diffusion coefficients显示文摘 | Porto L Jurcoane A Schwabe D | 2013 | Eur J Paediatr Neurol2013，17，3： | 1 |
| 17 | Assessment of daily intake of trace elements due to consumption of foodstuffs by adult inhabitants of Rio de Janeiro city显示文摘 | Santos E E Lauria D C Porto da Silveira C L | 2004 | Science of the Total Environment2004，327，13： | 1 |
| 18 | Differentia- tion between high and low grade tumours in paediatric pa- tients by using apparent diffusion coefficients 显示文摘 | PORTO L JURCOANE A SCHWABE D | 2013 | Eur JPaediatr Neuro12013，17，3： | 1 |
| 19 | 5-Fluorouraeil induces apoptosis in rat cardiocytes through intracellular oxidative stress显示文摘 | LAMBERTI M PORTO S MARRA M et d | 2012 | J Exp Clin Cancer Res2012，31，： | 1 |
| 20 | Comparison of ultrasound-assisted extraction with conventional extraction methods of oil and polyphenols from grape (Vitis vinifera L) seeds显示文摘 | PORTO D C PORRETTO E DECORTI D | 2013 | Uhrason Sonochem2013，20，4： | 1 |
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