R. Bougault
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View article: Digital electronics upgrade of the INDRA <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.svg" display="inline" id="d1e354"><mml:mrow><mml:mn>4</mml:mn><mml:mi>π</mml:mi></mml:mrow></mml:math> charged particle detection array and resulting performance improvements
Digital electronics upgrade of the INDRA charged particle detection array and resulting performance improvements Open
International audience
View article: Model-independent measurement of isospin diffusion in Ni-Ni systems at intermediate energy
Model-independent measurement of isospin diffusion in Ni-Ni systems at intermediate energy Open
In this work we provide a model-independent experimental evaluation of the degree of isospin equilibration taking place in $^{58,64}$Ni+$^{58,64}$Ni collisions at 32 MeV/nucleon across varying reaction centralities. This result has been ob…
View article: Study of the in medium cross-section and of the clustering process by means of the Bayesian technique applied to a nuclear reaction at Fermi energy
Study of the in medium cross-section and of the clustering process by means of the Bayesian technique applied to a nuclear reaction at Fermi energy Open
A Bayesian analysis aimed at tuning two parameters of the AMD model, one of them related to the in medium nucleon nucleon cross-section and the other to the clustering, has been performed. Experimental data collected with four blocks of th…
View article: Isotopic Transparency in Central Xe+Sn Collisions at 100 MeV/nucleon
Isotopic Transparency in Central Xe+Sn Collisions at 100 MeV/nucleon Open
A new method, based on comparing isotopic yield ratios measured at forward and sideward polar angles and on cross-bombarding heavy nuclei with different neutron-to-proton ratios, is used to quantify the stopping power of nuclear matter in …
View article: Towards quantitative symmetry energy constraints from isospin transport in heavy ion collisions
Towards quantitative symmetry energy constraints from isospin transport in heavy ion collisions Open
Heavy ion reactions provide a unique opportunity to measure the Equation of State (EoS) of baryonic matter in a large density domain, but to get quantitative constraints observables have to be used that are as insensitive as possible to fi…
View article: Calibrating the medium effects of light clusters in heavy-ion collisions
Calibrating the medium effects of light clusters in heavy-ion collisions Open
We propose a Bayesian inference estimation of in-medium modification of the cluster self-energies from light nuclei multiplicities measured in selected samples of central $^{136,124}$Xe$+^{124,112}$Sn collisions with the INDRA apparatus. T…
View article: Isospin diffusion from $^{40,48}$Ca$+^{40,48}$Ca experimental data at Fermi energies: Direct comparisons with transport model calculations
Isospin diffusion from $^{40,48}$Ca$+^{40,48}$Ca experimental data at Fermi energies: Direct comparisons with transport model calculations Open
This article presents an investigation of isospin equilibration in cross-bombarding $^{40,48}$Ca$+^{40,48}$Ca reactions at 35 MeV/nucleon, by comparing experimental data with filtered transport model calculations. Isospin diffusion is stud…
View article: Isoscaling in dilute warm nuclear systems
Isoscaling in dilute warm nuclear systems Open
Heavy-ion collisions are a good tool to explore hot nuclear matter below saturation density, ρ 0 . It has been established that if a nuclear system reaches the thermal and chemical equilibrium, this leads to scaling properties in the isoto…
View article: Isoscaling in Dilute Warm Nuclear Systems
Isoscaling in Dilute Warm Nuclear Systems Open
Heavy-ion collisions are a good tool to explore hot nuclear matter below saturation density. It has been established that if a nuclear system reaches the thermal and chemical equilibrium, this leads to scaling properties in the isotope pro…
View article: Nuclear symmetry energy at work in heavy ion reactions: new results from the INDRA-FAZIA apparatus
Nuclear symmetry energy at work in heavy ion reactions: new results from the INDRA-FAZIA apparatus Open
The recently coupled INDRA-FAZIA apparatus offers unique opportunities to investigate heavy ion collisions at Fermi energies by combining the optimal identification capabilities of FAZIA and the large angular coverage of INDRA. We present …
View article: Evolution of fragment production at the onset of Multifragmentation
Evolution of fragment production at the onset of Multifragmentation Open
The onset of Multifragmentation phenomenon is investigated at low excitation energies. A detailed study on the origin of Intermediate Mass Fragment (IMF, Z>=3) produced in central collisions in the 58 Ni+ 40 Ca reaction at 25 AMeV is prese…
View article: Quasiprojectile breakup and isospin equilibration at Fermi energies: an indication of longer projectile-target contact times?
Quasiprojectile breakup and isospin equilibration at Fermi energies: an indication of longer projectile-target contact times? Open
An investigation of the quasiprojectile breakup channel in semiperipheral and peripheral collisions of $^{58,64}$Ni+$^{58,64}$Ni at 32 and 52 MeV/nucleon is presented. Data have been acquired in the first experimental campaign of the INDRA…
View article: Analysis of 2-Body Central Events for $^{129}Xe+^{nat}Sn$ from $8A$ $MeV$ up to $18A$ $MeV$ and for $^{129}Xe+^{197}Au$ at $15A$ $MeV$ and $18A$ $MeV$
Analysis of 2-Body Central Events for $^{129}Xe+^{nat}Sn$ from $8A$ $MeV$ up to $18A$ $MeV$ and for $^{129}Xe+^{197}Au$ at $15A$ $MeV$ and $18A$ $MeV$ Open
A study of medium-mass heavy-ion reactions leading to two fragments in the exit channel from barrier to 18A MeV is proposed. A special focus is made on fission and quasi-fission for events with two fragments ($Z\geq10$) in the exit channel…
View article: Model independent reconstruction of impact parameter distributions for intermediate energy heavy ion collisions
Model independent reconstruction of impact parameter distributions for intermediate energy heavy ion collisions Open
14 pages, 7 figures. Revised version accepted for publication in Physical Review C
View article: Isospin Effect on fragment productions and reaction mechanisms for Ni+Ca systems at 25 AMeV
Isospin Effect on fragment productions and reaction mechanisms for Ni+Ca systems at 25 AMeV Open
Main features of fragments produced in 58Ni+40Ca and 58Ni+48Ca systems at 25 AMeV, collected by Chimera multidetector at INFN Laboratori Nazionali del Sud (Italy), are analysed in order to study properties of moderately excited systems (Ex…
View article: Model independent reconstruction of impact parameter distributions for intermediate energy heavy ion collisions
Model independent reconstruction of impact parameter distributions for intermediate energy heavy ion collisions Open
We present a model-independent method to reconstruct the impact parameter distributions of experimental data for intermediate energy heavy ion collisions, adapted from a recently proposed approach for ultra-relativistic heavy ion collision…
View article: Reconstructing the impact parameter dependence of experimental observables from intermediate energy heavy-ion collision data
Reconstructing the impact parameter dependence of experimental observables from intermediate energy heavy-ion collision data Open
Precise constraints on the equation of state (EoS) of dense matter can be obtained through comparison of data from heavy-ion (HIC) with transport models employing different effective interactions. An essential input for such comparisons i…
View article: Influence of fast emissions and statistical de-excitation on the isospin transport ratio
Influence of fast emissions and statistical de-excitation on the isospin transport ratio Open
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-stiffness of the nuclear equation of state. In fact such a ratio…
View article: Low Density In-Medium Effects on Light Clusters from Heavy-Ion Data
Low Density In-Medium Effects on Light Clusters from Heavy-Ion Data Open
The modification of the ground state properties of light atomic nuclei in the nuclear and stellar medium is addressed, using chemical equilibrium constants evaluated from a new analysis of the intermediate energy heavy-ion (Xe+Sn) collisio…
View article: In-medium effects in central heavy ion collisions at intermediate energies
In-medium effects in central heavy ion collisions at intermediate energies Open
International audience
View article: Negative heat capacity for hot nuclei using formulation from the microcanonical ensemble INDRA Collaboration
Negative heat capacity for hot nuclei using formulation from the microcanonical ensemble INDRA Collaboration Open
View article: Low-density in-medium effects on light clusters from heavy-ion data
Low-density in-medium effects on light clusters from heavy-ion data Open
The modification of the ground state properties of light atomic nuclei in the\nnuclear and stellar medium is addressed, using chemical equilibrium constants\nevaluated from a new analysis of the intermediate energy heavy-ion (Xe$+$Sn)\ncol…
View article: Energy response and identification efficiency of CsI(Tl) crystals irradiated with energetic protons
Energy response and identification efficiency of CsI(Tl) crystals irradiated with energetic protons Open
View article: Isospin transport phenomena in semiperipheral heavy ion collisions at Fermi energies
Isospin transport phenomena in semiperipheral heavy ion collisions at Fermi energies Open
The FAZIA collaboration started its physics program in 2015 with a setup consisting of four complete blocks (ISOFAZIA experiment). Results concerning isospin transport phenomena and QP fission for the systems 80Kr + 40,48Ca at 35 MeV/nucle…
View article: Validation of a new “3D calorimetry” of hot nuclei with the HIPSE event generator
Validation of a new “3D calorimetry” of hot nuclei with the HIPSE event generator Open
In nuclear thermodynamics, the determination of the excitation energy of hot\nnuclei is a fundamental experimental problem. Instrumental physicists have been\ntrying to solve this problem for several years by building the most exhaustive\n…
View article: New “3D calorimetry” of hot nuclei
New “3D calorimetry” of hot nuclei Open
International audience
View article: Phase transition dynamics for hot nuclei
Phase transition dynamics for hot nuclei Open
An abnormal production of events with almost equal-sized fragments was\ntheoretically proposed as a signature of spinodal instabilities responsible for\nnuclear multifragmentation in the Fermi energy domain. On the other hand finite\nsize …
View article: Light charged clusters emitted in 32 MeV/nucleon <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Xe</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>136</mml:mn><mml:mo>,</mml:mo><mml:mn>124</mml:mn></mml:mrow></mml:mmultiscripts><mml:mo>+</mml:mo><mml:mmultiscripts><mml:mi>Sn</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>124</mml:mn><mml:mo>,</mml:mo><mml:mn>112</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> reactions: Chemical equilibrium and production of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>3</mml:mn></mml:mmultiscripts></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>6</mml:mn></mml:mmultiscripts></mml:math>
Light charged clusters emitted in 32 MeV/nucleon reactions: Chemical equilibrium and production of and Open
Nuclear particle production from peripheral to central events is presented.\nN/Z gradient between projectile and target is studied using the fact that two\nreactions have the same projectile+target N/Z and so the same neutron to proton\nra…
View article: Recent results of the ISOFAZIA experiment
Recent results of the ISOFAZIA experiment Open
Recent results concerning isospin transport phenomena on the sys-tems80Kr +40,48Ca at 35 MeV/nucleon are presented. An investigation of theisospin content of both fission fragments coming from the QuasiProjectile is alsoshown. Data were co…
View article: Improving isotopic identification with INDRA Silicon–CsI(Tl) telescopes
Improving isotopic identification with INDRA Silicon–CsI(Tl) telescopes Open