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Dr ALAHARI, Navin (Director of GANIL)23/11/2021 09:00
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Dr BOUGAULT, Rémi (Deputy director of LPC Caen)23/11/2021 09:20
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Dr FRANKLAND, J. D. (GANIL, France)23/11/2021 09:40
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Dr GERACI, Elena (Univ. Catania and INFN Sez. Catania, Italy)23/11/2021 10:55
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Dr COLONNA, Maria (INFN-LNS Catania, Italy)23/11/2021 11:40Comparison of heavy ion transport simulations for mean-field dynamicsRegular talk
Within the transport model evaluation project (TMEP collaboration) of simulations for heavy-ion collisions, the mean-field dynamics of local density fluctuations is examined in several transport models widely employed to describe nuclear reactions.
The results of transport codes belonging to two families (BUU-like and QMD-like) are compared among each other and to exact calculations. For...
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Dr WADA, Roy (Cyclotron Institute, TAMU, USA)23/11/2021 12:05Nuclear dynamics : Experimental aspectsRegular talk
The antisymmetrized molecular dynamics (AMD)[1] is one of the most successful transport models, applied in intermediate heavy ion collisions. AMD usus a frozen (crystal) concept for the initial nuclei and the Fermi motion is taken into account as an average Fermi energy, T0 ~ 9 MeV/nucleon, in the energy calculation. This brings the stability of the initial nuclei in the time evolution, but...
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M. TEH, Chi-En (Michigan State University, USA)23/11/2021 12:30Probing the nucleon effective mass with n/p ratios using Bayesian analysisRegular talk (YP)
Abstract: In this study, we analyze the experimental data from heavy-ion collision (HIC) using 40Ca and 48Ca beams at 140 MeV/u impinging on 58Ni and 64Ni targets. The experimental set up includes a charged particle array HiRA10 and the neutron wall array, LANA. From the charged particles, we construct coalescence invariant ratios of pseudo-neutrons and protons as a function of transverse...
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Dr SCAMPS, Guillaume (Bruxelles Univ., Belgium)23/11/2021 14:15Progress in the characterization of the fission fragments in microscopic theoryInvited talk
The complete microscopic description of the fission process is still a challenge for nuclear theory. Density functional theory (DFT) and Time-Dependent DFT are tools of choice to describe fission. However, it can be difficult to extract information about the fragments that are needed for comparison with experience or as input for the r-process model.
In this presentation, I will discuss...
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Dr BENLLIURE, Jose (Univ. Santiago de Compostela, Spain)23/11/2021 15:00Quenched production of neutron-rich nuclei in fragmentation reactions of medium- mass and heavy projectilesRegular talk
J. Benlliure 1 , J. Díaz 1 , H. Alvarez-Pol 1 , T. Aumann 2 , C.A. Bertulani 3 , B. Blank 4 , E. Casarejos 1 , D. Cortina 1 , D. Dragosavac 1 , V. Fohr 5 , A. Gargano 6 , M. Gascón 1 , W. Gawlikowicz 7 , A. Heinz 5 , K. Helariutta 8 , A. Kelic 5 , F. Montes 5 , L. Pienkowski 7 , J.L. Rodríguez-Sánchez 1 , K.-H. Schmidt 5 , M. Staniou 5 , K. Subotic 9 , K. Summerer 5 , J. Taieb 10 , A....
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Dr PAGANO, Angelo (INFN Sez. Catania, Italy)23/11/2021 15:25Density evaluation in neck fragmentation at the Fermi energiesRegular talk (remote)
Density determinations for neck fragmentation (ternary reactions) has been shown [1] for the reaction 124Sn + 64Ni at 35 AMeV, as investigated by using the CHIMERA multi-detector [2]. The analysis is now applied to the system 112Sn + 58Ni and the reactions induced by 124Xe on 64Zn and 64Ni targets at the same incident energy. In these last cases the two systems differ only for the target...
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Dr MCINTOSH, Alan B. (Texas A&M, USA)23/11/2021 16:30Nuclear dynamics : Experimental aspectsInvited talk
The nuclear caloric curve is an emergent property of the nuclear equation of state. Some models predict the caloric curve depends on the neutron excess, but the magnitude and even sign of this dependence varies between models. We aim to characterize the asymmetry dependence of the nuclear caloric curve experimentally. Since the caloric curve emerges from the microscopic interaction, knowledge...
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Dr BORDERIE, Bernard (IJCLab Orsay, France)23/11/2021 17:15Negative heat capacity for hot nuclei: confirmation with formulation from the microcanonical ensembleRegular talk
B. Borderie et al. - INDRA Collaboration
By using freeze-out properties of multifragmenting hot nuclei produced in quasi-fusion central 129 Xe+ nat Sn collisions at different bombarding energies (32, 39, 45 and 50 AMeV) which were estimated by means of a simulation based on experimental data collected by the 4π INDRA multidetector, heat capacity in the thermal excitation energy range 4 -...
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Dr NAPOLITANI, Paolo (IJCLab Orsay, France)23/11/2021 17:40Interplay between surface and volume instabilities in heavy-ion collisions examined within mean-field extensionsRegular talk
In the transition from nuclear matter to finite nuclei, complex finite-size effects which characterise open systems arise, in relation with either the nuclear surface or the bulk. In addition, the non-equilibrium character of the process, typical of violent heavy-ion collisions (from Fermi energy to the intermediate-energy domain) adds up as well. The resulting dynamics is the combination of...
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DINH VIET, Hung (IJCLab Orsay, France)23/11/2021 18:05Collective and dissipative effects in a common microscopic dynamical descriptionRegular talk (YP)
Depending on the energy regime, the dynamics of heavy-ion collisions reveals a variety of different mechanisms which are attributed to the combination of collective and dissipative effects.
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Whereas at low and high energies only one of the two contributions tends to prevail, the description of Fermi-to-intermediate energy regimes imposes to address the interplay between collective and chaotic... -
20. Understanding isospin transport ratio: influence of fast emissions and statistical de-excitationDr CAMAIANI, Alberto (IKS - KU Leuven, Belgium)24/11/2021 10:00Understanding isospin transport ratio: influence of fast emissions and statistical de-excitationRegular talk (YP)
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 is expected to bypass any perturbations introducing a linear
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transformation of the chosen observable. In particular, it is supposed to overcome... -
Dr GNOFFO, Brunilde (Univ. Catania and INFN Sez. Catania, Italy)24/11/2021 10:25Isospin influence on the thermal characteristics in the reactions 78,86Kr+ 40,48Ca at 10 AMeVRegular talk (YP)
B. Gnoffo1,2, S. Pirrone2, G. Politi1,2, L. Acosta2,3, G. Cardella2, E. De Filippo2, E. Geraci1,2, L. Lo Monaco1, C. Maiolino4, N.S. Martorana1,4, A. Pagano2, E.V. Pagano4, M. Papa2, F. Risitano2,5, F. Rizzo1,4, P. Russotto4 and M. Trimarchi2,5
1) Dipartimento di Fisica e Astronomia E. Majorana, Università di Catania, Italy
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2) INFN-Sezione di Catania, Italy
3) Instituto de Fisica,... -
Dr FABLE, Quentin (L2it, CNRS/IN2P3, France)24/11/2021 11:30Experimental study of the symmetry energy from 40,48 Ca+ 40,48 Ca reactions at 35 AMeVRegular talk (YP)
We investigated the possibility to probe the symmetry energy term of the nuclear equation of state with isoscaling observables from 40,48 Ca+ 40,48 Ca reactions at 35 AMeV . Data were obtained using the unique coupling of the VAMOS high acceptance spectrometer and the 4π INDRA detector. This required a precise study of the trajectory reconstruction in the spectrometer focal plane along with...
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M. QUICRAY, Joël (LPC Caen, France)24/11/2021 11:55Probing nuclear isospin equilibration : the INDRA-FAZIA experiment in GANILRegular talk (YP)
J. Quicray
On behalf of the INDRA and FAZIA collaborationsNormandie Univ, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, 14000 Caen, France
The study of fragmentation reactions produced in heavy-ion collisions has permitted major advances in the understanding of the dynamics and thermodynamics of nuclear matter [1, 2] and is still one of the most promising tools to constrain its equation of...
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M. LEE, Jung Woo (Korea University, South Korea)24/11/2021 12:20Isoscaling effect with $Z$=1 and 2 particles in Sn+Sn at 270 AMeVRegular talk (YP)
Isoscaling effect with $Z$=1 and 2 particles in Sn+Sn at 270 AMeV
J. W. Lee for S$\pi$RIT collaboration
Korea University, Seoul, KoreaThe mechanism of the fragmentation in heavy ion collision is studied with particle yields of light nuclei. In the thermal equilibrium view, the primary fragment yield can be predicted using the partition function of each fragment. However, the fragments...
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Dr LI, Bao An (Texas A&M Commerce, USA)24/11/2021 14:15Theoretical aspects: Isospin effects and EOS in nuclear reactionsRegular talk (remote)
The isospin dependence of in-medium nuclear effective interactions is a fundamental issue in nuclear physics and has broad ramifications in astrophysics. Its uncertainties, especially the difference of neutron-proton interactions in the isosinglet and isotriplet channels, affect significantly the density and momentum dependence of the isovector single-nucleon potential and nucleon-nucleon...
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Dr RUSSOTTO, Paolo (INFN-LNS Catania, Italy)24/11/2021 15:00Status of data analysis and preliminary results of the CHIFAR experimentRegular talk (remote)
The CHIFAR experiment [1] was carried out at LNS in November 2019. Reactions between beams of 124Sn,124Xe and 112Sn, accelerated at 20 AMeV by the CS, and targets of 64Ni, 64Zn and 58Ni were studied by using the CHIMERA multi-detector [2] coupled to 10 telescopes of the FARCOS array [3]. The ten FARCOS telescopes, grouped in 5 couples, were arranged in a ring-like configuration covering about...
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Dr LYNCH, William (NSCL/FRIB Dept. of Physics and Astronomy Michigan State Univ., USA)24/11/2021 15:25Constraints on the symmetry energy supra-saturation density from Pion Spectral RatiosRegular talk (remote)
Pion spectral ratios and double ratios are measured for neutron rich 132Sn+124Sn and neutron deficient 108Sn+112Sn collisions. Both pi-/Pi+ single spectral ratios for the two systems and double ratios obtained by combining both systems can be described by a dcQMD calculations. These comparisons provide a correlated constraint on L and on the neutron-proton effect mass difference. This...
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Dr ONO, Akira (Tohoku University, Japan)24/11/2021 16:30Transport model approach for clusters in heavy-ion collision dynamicsRegular talk (remote)
Clusters are the dominant products in heavy-ion collisions (HICs) in a wide energy range from the Fermi energy domain to higher energies of several hundred MeV/nucleon. Correlations in such highly excited nuclear many-body systems are of particular interest, and strong correlations can affect the global dynamical evolution of HICs. Also studies of EOS of symmetric and asymmetric nuclear matter...
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Dr CARDELLA, Giuseppe (INFN Sez. Catania, Italy)24/11/2021 17:15Population and decay of states of 12CRegular talk (remote)
Population and decay of states of 12C
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G. Cardella(1), A. Bonasera(2)(3), N.S. Martorana(2)(4), L. Acosta(1)(5), E. De Filippo(1), E. Geraci(1)(4), B. Gnoffo(1)(4), C. Guazzoni(6), L.Lo Monaco(4), C. Maiolino(2), A. Pagano(1), E.V. Pagano(2), M. Papa(1), S. Pirrone(1), G. Politi(1)(4), F. Rizzo(2)(4), P. Russotto(2), D. V. Sicari(6), and M. Trimarchi(1)(7)
1 INFN sezione di Catania,... -
REBILLARD-SOULIÉ, Alex (LPC Caen, France)24/11/2021 17:40Study of the ${}^{12}$C Hoyle state produced by fragmentationRegular talk (YP)
The second 0$^+$ excited state of ${}^{12}$C, also known as the Hoyle state, has a key role in the synthesis of the elements. It is also believed to possess a rather unusual structure where the dominant degrees of freedom are those of $\alpha$ clusters rather than nucleons [1]. Whereas the understanding of the properties of this state has been the focus of a major experimental activity, its...
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Dr LOMBARDO, Ivano (INFN Sez. di Catania, Italy)25/11/2021 09:15Clustering effects in nuclear reactions at low and medium energiesInvited talk
In this talk, I will review some recent achievements in the study of clustering in light and medium mass nuclei. In particular, I will discuss some results in the rush to the discovery of possible direct decays of the Hoyle state in 12C, that has been performed both by using nuclear reactions at low and medium energies. I will also discuss some results obtained in the analysis of 13C and 20Ne...
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Dr MERCIER, Florian (IJCLab Orsay, France)25/11/2021 10:00Alpha, cluster and 2alpha decays with Energy Density Functional methodRegular talk (YP)
The use of Energy Density Functional (EDF) method within a relativistic framework showed, this last decades, that it can both describe the bulk properties of nuclei (radii, ground state energy, binding energy, ...) [1] as well as clusters formation[2]. The study of cluster structures allow for many applications ranging from $\alpha$ or cluster decay to fission or many different kinds of...
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Dr RISITANO, Fabio (Univ. Messina and INFN Sez. Catania, Italy )25/11/2021 10:25
F. Risitano 1,2,* , L. Acosta 1,3 , G. Cardella 1 , E. De Filippo 1 , D. Dell’Aquila 4,5 , F. Favela 1,3 , E. Geraci 1,6 , B. Gnoffo 1,6 , I. Lombardo 1 , C. Maiolino 5 , N.S. Martorana 5,6 , A. Pagano 1 , E.V. Pagano 5 , M. Papa 1 , S. Pirrone 1 , G. Politi 1,6 , F. Rizzo 5,6 , P. Russotto 5 , A. Trifirò 1,2 , M. Trimarch i1,2
1) INFN-Sezione di Catania, Italy
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2) Dipartimento MIFT,... -
Dr BURRELLO, Stefano (Technische Universitat Darmstadt, Fachbereich Physik, Institut fur Kernphysik, Darmstadt, Germany)25/11/2021 11:30Towards a global and multi-purpose EoS: quasi-clusters for an explicit treatment of short-range correlationsRegular talk (YP)
The formation of nuclear clusters constitutes an essential feature for the construction of global equation-of-state (EoS) tables. They emerge as many-body correlations, which can be
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attributed to the nucleon-nucleon (NN) interaction, and exist at sub-saturation densities in nuclear matter. Phenomenological models that make use of energy density functionals (EDFs) offer a convenient approach... -
Dr LE FÈVRE, Arnaud (GSI, Darmstadt, Germany)25/11/2021 11:55Constraining Neutron-Star Matter with Microscopic and Macroscopic CollisionsRegular talk
Interpreting high-energy, astrophysical phenomena, such as supernova explosions or neutron-star collisions, requires a robust understanding of matter at supranuclear densities. However, our knowledge about dense matter explored in the cores of neutron stars remains limited. Fortunately, dense matter is not only probed in astrophysical observations, but also in terrestrial heavy-ion collision...
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Dr CHEN, Thomas (Association for Computing Machinery, USA)25/11/2021 12:20Machine learning at the nexus of EoS and astrophysicsRegular talk (YP)
In this review, we seek to synthesize the current literature in terms of works that harness machine learning for the understanding of the nuclear EoS in astrophysics. Furthermore, we propose future areas of work at this exciting interdisciplinary nexus. Model types and approaches include regression, clustering, decision trees, ensemble models, and neural networks (computer vision). There are,...
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Prof. REZZOLA, Luciano (Frankfurt University, Germany)25/11/2021 14:15Nuclear EoS and Astrophysics : experimental aspectsRegular talk (remote)
I will argue that if black holes represent one the most fascinating implications of Einstein's theory of gravity, neutron stars in binary system are arguably its richest laboratory, where gravity blends with astrophysics and particle physics. I will discuss the rapid recent progress made in modelling these systems and show how the gravitational signal can provide tight constraints on the...
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Prof. GULMINELLI, Francesca (LPC Caen, France)25/11/2021 15:00The equation of state of dense matter and nuclear physics constraintsInvited talk
The exceptional progress of multi-messenger astronomy on different astrophysical sources of dense matter has very recently led to quantitative measurements of various properties of neutron stars, such as the correlation between mass and radius from X-ray timing with NICER and the tidal polarizability from gravitational wave LIGO/Virgo data. These observations, together with the plethora of...
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DINH THI, Hoa (GANIL, France)25/11/2021 15:45The effect of the energy functional on the pasta-phase properties of catalysed neutron starsRegular talk (YP)
Nuclear pasta, which is an inhomogeneous distribution of nuclear matter characterized by non-spherical clustered structures, is expected to occur in a narrow spatial region at the bottom of the inner crust of neutron stars, but the width of the pasta layer is strongly model dependent. In the framework of a compressible liquid-drop model, we use Bayesian inference to analyze the constraints on...
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Dr MARTORANA, Nunzia Simona (Dipartimento di Fisica e Astronomia "Ettore Majorana", Università degli Studi di Catania and INFN-LNS, Catania, Italy)25/11/2021 16:50THE NEW FRAGMENT IN-FLIGHT SEPARATOR AT INFN-LNSRegular talk (YP)
N.S. Martorana $^{1,2}$, C. Altana$^{2}$, A. Amato $^{2}$, L. Calabretta $^{3,2}$, G. Cardella $^{4}$, A. Caruso $^{2}$, L. Cosentino $^{2}$, M. Costa $^{2}$, E. De Filippo $^{4}$, G. De Luca $^{2}$, E. Geraci $^{1,4}$, B. Gnoffo $^{1,4}$, C. Guazzoni $^5$, L. Lo Monaco $^{1}$, C. Maiolino $^{2}$, E.V. Pagano $^{2}$, S. Pirrone $^{4}$, G. Politi $^{1,4}$, S. Pulvirenti $^{2}$, F. Risitano...
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Dr TSANG, Chun Yuen (NSCL, Michigan State University, USA)25/11/2021 17:15Impact parameter determination using Machine learning algorithmsRegular talk (YP)
Determination of impact parameter is a challenge for experimentalists because it cannot be measured directly. Using transport model simulations, it has been demonstrated that machine learning algorithms can infer impact parameter from experimental observables. However, unlike simulations, detection limitations such as geometric efficiencies and energy thresholds of the detector may affect the...
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Dr PAGANO, Emanuele Vincenzo (INFN - LNS Catania, Italy)26/11/2021 09:35Recent results on the construction of a new correlator for neutrons and charged particlesRegular talk (remote)
With the advent of new facilities for radioactive ion beams mainly rich in neutrons, like SPES @ LNL, FRAISE @ LNS and FAIR @ GSI just to give some examples, the detection of neutrons, in conjunction with charged particles, in Heavy on collisions with radioactive beams becomes mandatory. Neutron detection requires both high angular and energy resolutions. Consequently, the construction of new...
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Dr HAHN, Kevin Insik (Center for exotic nuclear studies, IBS, Daejon, Korea)26/11/2021 10:00New Experimental Tools, Detection Techniques ad AcceleratorsRegular talk (remote)
The radioactive ion (RI) beam accelerator facility called RAON is under construction in Korea. It will produce RI beams by both the ISOL and In-flight methods. One of the experimental facilities called KoBRA is expected to carry out nuclear astrophysics and nuclear structure experiments in the early phase of RAON. Several experiments using both stable and RI beams of tens of MeV/u are...
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Dr CORSI, Anna (IRFU Saclay, France)26/11/2021 11:30Probing the structure of exotic nuclei with protons targetsInvited talk
Proton induced quasi-free scattering is a tool of choice to probe the nuclear single particle structure. When dealing with radioactive beams in inverse kinematics, the use of liquid hydrogen targets is a very natural choice. In this talk I will describe two devices, MINOS and COCOTIER, which are used at RIBF RIKEN and GSI, respectively, to pursue the study of the structure of radioactive nuclei
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Dr LEWITOWICZ, Marek (Chair of NUPECC), Dr LOPEZ, Olivier (LPC Caen)26/11/2021 12:15
NUPECC prizes given by M. Lewitowitz, chair of NUPECC
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26/11/2021 12:30Closing remarks
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