Publications (50)
Effect of the intermediate velocity emissions on the quasi-projectile properties for the Ar+Ni system at 95 A.MeV
D. Dore, Ph. Buchet, J. L. Charvet +47
The quasi-projectile (QP) properties are investigated in the Ar+Ni collisions at 95 A.MeV taking into account the intermediate velocity emission. Indeed, in this reaction, between…
Equilibrium constants of Hydrogen and Helium isotopes at low nuclear densities
R. Bougault, E. Bonnet, B. Borderie +14
Equilibrium constants for Hydrogen and Helium isotopes as a function of density and temperature are measured in the framework of the study made by Qin et al. [Qin L et al 2012 Phys…
High Precision Measurement of the Ne Half-life using real-time digital acquisition
C. Fontbonne, P. UjiÄ, F. de Oliveira Santos +34
The half-life of Ne has been measured using a real-time digital multiparametric acquisition system providing an accurate time-stamp and relevant information on the detectors…
Transition from participant to spectator fragmentation in Au+Au reaction between 60 AMeV and 150 AMeV
K. Zbiri, A. LeFèvre, J. Aichelin +28
Using the quantum molecular dynamics approach, we analyze the results of the recent INDRA Au+Au experiments at GSI in the energy range between 60 AMeV and 150 AMeV. It turns out th…
Improving isotopic identification with \emph{INDRA} Silicon-CsI(\emph{Tl}) telescopes
O. Lopez, M. Parlog, B. Borderie +21
Profiting from previous works done with the \emph{INDRA} multidetector on the description of the light response of the CsI(\emph{Tl}) crystals to different impinging n…
Model-independent tracking of criticality signals in nuclear multifragmentation data
J. D. Frankland, A. Chbihi, A. Mignon +41
We look for signals of criticality in multifragment production in heavy-ion collisions using model-independent universal fluctuations theory. The phenomenon is studied as a functio…
Study of quasi-projectile properties at Fermi energies in 48Ca projectile systems
S. Upadhyaya, K. Mazurek, T. Kozik +32
The emission of the pre-equilibrium particles during nuclear collisions at moderate beam energies is still an open question. This influences the properties of the compound nucleus…
Study of multi-neutron systems with SAMURAI spectrometer
Z. H. Yang, F. M. Marqués, N. L. Achouri +95
The tetraneutron has been drawing the attention of the nuclear physics community for decades, but a firm conclusion on its existence and properties is still far from being reached…
Liquid-Gas Coexistence Region in Central Xe+Sn Reactions
B. Borderie, M. F Rivet, G. Tabacaru +4
Charge partitions and distributions of fragments emitted in multifragmentation of fused systems produced in central collisions are studied over the incident energy range 32-50 MeV…
Response of CsI(Tl) scintillators over a large range in energy and atomic number of ions (Part II): calibration and identification in the INDRA array
M. Parlog, B. Borderie, M. F. Rivet +8
The light output of the 324 CsI(Tl) scintillators of INDRA has been measured over a large range both in energy: 1 - 80 AMeV and in atomic number of incident ions: Z = 1 - 60. An an…
Energy measurement and fragment identification using digital signals from partially depleted Si detectors
G. Pasquali, G. Pastore, N. Le Neindre +36
A study of identification properties of a Si-Si DE-E telescope exploiting an underdepleted residual-energy detector has been performed. Five different bias voltages have been used,…
Multifragmentation and phase transition for hot nuclei
Bernard Borderie, E. Bonnet, F. Gulminelli +19
Recent important progress on the knowledge of multifragmentation and phase transition for hot nuclei, thanks to the high detection quality of the INDRA array, is reported. It conce…
Fragment Charge Correlations and Spinodal Decomposition in Finite Nuclear Systems
G. Tabacaru, B. Borderie, P. Desesquelles +2
Enhanced production of events with almost equal-sized fragments is experimentally revealed by charge correlations in the multifragmentation of a finite nuclear system selected in $…
Isospin transport in 84Kr+112,124Sn reactions at Fermi energies
S. Piantelli, G. Casini, A. Olmi +32
Isospin transport phenomena in dissipative heavy ion collisions have been investigated at Fermi energies with a beam of 84Kr at 35AMeV. A comparison of the <N>/Z of light and mediu…
The behaviour of constrained caloric curves as ultimate signature of a phase transition for hot nuclei
B. Borderie, S. Piantelli, M. F. Rivet +15
Simulations based on experimental data obtained from multifragmenting quasifused nuclei produced in central 129Xe + natSn collisions have been used to deduce event by event freeze-…
Characterization of the breakup channel in the asymmetric systems Ca+C at 25 and 40 MeV/nucleon
S. Piantelli, G. Casini, P. Ottanelli +36
An analysis of the asymmetric reactions Ca+C at 25 and 40 MeV/nucleon is presented. Data have been collected with six modules of the FAZIA array. The analysis is f…
Freeze-out volume in multifragmentation - dynamical simulations
M. Parlog, G. Tabacaru, J. P. Wieleczko +5
Stochastic mean-field simulations for multifragmenting sources at the same excitation energy per nucleon have been performed. The freeze-out volume, a concept which needs to be pre…
The prominent role of the heaviest fragment in multifragmentation and phase transition for hot nuclei
Bernard Borderie, E. Bonnet, N. Le Neindre +20
The role played by the heaviest fragment in partitions of multifragmenting hot nuclei is emphasized. Its size/charge distribution (mean value, fluctuations and shape) gives informa…
Dynamical fission of the quasiprojectile and isospin equilibration for the system 80Kr+ 48 Ca at 35 MeV/nucleon
S. Piantelli, G. Casini, A. Ono +44
Experimental results concerning the dynamical fission of quasiprojectiles in semiperipheral collisions for the system 80 Kr+ 48 Ca at 35 MeV/nucleon are presented. Data have been c…
Isospin diffusion measurement from the direct detection of a Quasi-Projectile remnant
A. Camaiani, G. Casini, S. Piantelli +40
The neutron-proton equilibration process in 48 Ca+ 40 Ca at 35 MeV/nucleon bombarding energy has been experimentally estimated by means of the isospin transport ratio. Experimental…
Isospin Diffusion in Ni-Induced Reactions at Intermediate Energies
E. Galichet, Marie-France Rivet, B. Borderie +17
Isospin diffusion is probed as a function of the dissipated energy by studying two systems Ni+Ni and Ni+Au, over the incident energy range 52-74\AM. Ex…
Isospin transport in 84Kr + 112,124Sn collisions at Fermi energies
S. Barlini, S. Piantelli, G. Casini +32
Isotopically resolved fragments with Z<=20 have been studied with high resolution telescopes in a test run for the FAZIA collaboration. The fragments were produced by the collision…
The dipole strength distribution of He and decay characteristics
C. Lehr, T. Aumann, M. Duer +91
The weak binding and spatially extended neutron densities characteristic of drip-line nuclei give rise to a distinctive low-energy dipole response. The drip-line nucleus He is…
Decay of excited nuclei produced in Kr + Ca reactions at 5.5 MeV/nucleon
G. Ademard, J. P. Wieleczko, J. Gomez Del Campo +27
Decay modes of excited nuclei are investigated in Kr + Ca reactions at 5.5 MeV/nucleon. Charged products were measured by means of the INDRA array. Kinetic-e…
Yield scaling, size hierarchy and fluctuations of observables in fragmentation of excited heavy nuclei
N. Le Neindre, E. Bonnet, J. P. Wieleczko +26
Multifragmentation properties measured with INDRA are studied for single sources produced in Xe+Sn reactions in the incident energy range 32-50 A MeV and quasiprojectiles from Au+A…
Response of CsI(Tl) scintillators over a large range in energy and atomic number of ions (Part I): recombination and delta -- electrons
M. Parlog, B. Borderie, M. F. Rivet +8
A simple formalism describing the light response of CsI(Tl) to heavy ions, which quantifies the luminescence and the quenching in terms of the competition between radiative transit…
Study and validation of a new "3D Calorimetry" of hot nuclei with the HIPSE event generator
E. Vient, L. Manduci, E. Legouée +27
In nuclear thermodynamics, the determination of the excitation energy of hot nuclei is a fundamental experimental problem. Instrumental physicists have been trying to solve this pr…
A new "3D Calorimetry" of hot nuclei
E. Vient, L. Manduci, E. Legouée +27
In the domain of Fermi energy, it is extremely complex to isolate experimentally fragments and particles issued from the cooling of a hot nucleus produced during a heavy ion collis…
Phase transition dynamics for hot nuclei
B. Borderie, N. Le Neindre, M. F. Rivet +23
An abnormal production of events with almost equal-sized fragments was theoretically proposed as a signature of spinodal instabilities responsible for nuclear multifragmentation in…
Examination of cluster production in excited light systems at Fermi energies from new experimental data and comparison with transport model calculations
C. Frosin, S. Piantelli, G. Casini +44
Four different reactions, S+C and Ne+C at 25 and 50 MeV/nucleon, have been measured with the FAZIA detector capable of full isotopic identification of m…
Multifragmentation of a very heavy nuclear system (II): bulk properties and spinodal decomposition
J. D. Frankland, B. Borderie, M. Colonna +8
The properties of fragments and light charged particles emitted in multifragmentation of single sources formed in central 36AMeV Gd+U collisions are reviewed. Most of the products…
Constrained caloric curves and phase transition for hot nuclei
Bernard Borderie, S. Piantelli, M. F. Rivet +18
Simulations based on experimental data obtained from multifragmenting quasi-fused nuclei produced in central Xe + Sn collisions have been used to deduce event by ev…
Direct observation of three-neutron emission from He and the search for the trineutron
S. W. Huang, C. Lenain, Z. H. Yang +107
Three-neutron emission from He has been directly measured for the first time, following neutron knockout from a He beam at 156 MeV/nucleon. A resonance-like structure at $2…
Light charged clusters emitted in 32 MeV/nucleon 136,124Xe+124,112Sn reactions: chemical equilibrium, 3He and 6He production
R. Bougault, E. Bonnet, B. Borderie +21
Nuclear particle production from peripheral to central events is presented. N/Z gradient between projectile and target is studied using the fact that two reactions have the same pr…
Dynamical effects in multifragmentation at intermediate energies
J. Colin, D. Cussol, J. Normand +34
The fragmentation of the quasi-projectile is studied with the INDRA multidetector for different colliding systems and incident energies in the Fermi energy range. Different experim…
Understand the thermometry of hot nuclei from the energy spectra of light charged particles
E. Vient, L. Augey, B. Borderie +25
In the domain of Fermi energy, the hot nucleus temperature can be determined by using the energy spectra of evaporated light charged particles. But this method of measurement is no…
Multi-particle correlation function to study short-lived nuclei
F. Grenier, A. Chbihi, R. Roy +21
Unstable 10C nuclei are produced as quasi-projectiles in 12C+24Mg collisions at E/A = 53 and 95 MeV. The decay of their short-lived states is studied with the INDRA multidetector a…
Dynamics and thermodynamics of phase transition in hot nuclei
M. F. Rivet, N. Bellaize, B. Borderie +8
The dynamics and thermodynamics of phase transition in hot nuclei are studied through experimental results on multifragmentation of heavy systems (A>200) formed in central heavy io…
The european FAZIA initiative: a high-performance digital telescope array for heavy-ion studies
G. Casini, S. Barlini, G. Pasquali +36
The european Fazia collaboration aims at building a new modular array for charged product identification to be employed for heavy-ion studies. The elementary module of the array is…
Liquid-gas phase transition in hot nuclei studied with INDRA
B. Borderie, R. Bougault, P. Desesquelles +11
Thanks to the high detection quality of the INDRA array, signatures related to the dynamics (spinodal decomposition) and thermodynamics (negative microcanonical heat capacity) of a…
Evidence for Spinodal Decomposition in Nuclear Multifragmentation
B. Borderie, G. Tabacaru, Ph. Chomaz +5
Multifragmentation of a ``fused system'' was observed for central collisions between 32 MeV/nucleon 129Xe and natSn. Most of the resulting charged products were well identified tha…
Liquid-gas phase transition in hot nuclei: correlation between dynamical and thermodynamical signals
M. F. Rivet, B. Borderie, R. Bougault +8
The dynamics and thermodynamics of phase transition in hot nuclei are studied through experimental results on multifragmentation of heavy systems (A200) formed in central heav…
Isospin diffusion in semi-peripheral + collisions at intermediate energies (I): Experimental results
E. Galichet, M. F. Rivet, B. Borderie +17
Isospin diffusion in semi-peripheral collisions is probed as a function of the dissipated energy by studying two systems + and + , over the…
Negative heat capacity for hot nuclei using formulation from the microcanonical ensemble INDRA Collaboration
B. Borderie, S. Piantelli, E. Bonnet +15
By using freeze-out properties of multifragmenting hot nuclei produced in quasifusion central Xe+Sn collisions at different beam energies (32, 39, 45 and 50 AMeV) w…
Experimental evidence for spinodal decomposition in multifragmentation of heavy systems
INDRA Collaboration, G. Tabacaru, B. Borderie +10
Multifragmentation of fused systems was observed for central collisions between 32 AMeV 129Xe and Sn, and 36 AMeV 155Gd and U. Previous extensive comparisons between the two system…
Influence of Neutron Enrichment on Disintegration Modes of Compound Nuclei
E. Bonnet, J. P. Wieleczko, A. Chbihi +27
Cross sections, kinetic energy and angular distributions of fragments with charge 6Z28 emitted in 78,82Kr+40C at 5.5 MeV/A reactions were measured at the GANIL facility u…
Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems
P. Marini, H. Zheng, M. Boisjoli +24
We report experimental signals of Bose-Einstein condensation in the decay of hot Ca projectile-like sources produced in mid-peripheral collisions at sub-Fermi energies. The experim…
Estimate of average freeze-out volume in multifragmentation events
S. Piantelli, N. Le Neindre, E. Bonnet +20
An estimate of the average freeze-out volume for multifragmentation events is presented. Values of volumes are obtained by means of a simulation using the experimental charged prod…
Influence of fast emissions and statistical de-excitation on the isospin transport ratio
A. Camaiani, S. Piantelli, A. Ono +18
Isospin transport ratio is a powerful method to estimate the neutron-proton (n-p) equilibration in heavy-ion collisions, and extensively used to obtain information on the asy-stiff…
Correlations between signals of the liquid-gas phase transition in nuclei
Marie-France Rivet, N. Le Neindre, J. P. Wieleczko +9
Finite systems such as atomic nuclei present at phase transition specific features different from those observed at the thermodynamic limit. Several characteristic signals were fou…