Cluster production within antisymmetrized molecular dynamics

Ono, Akira

doi:10.1051/epjconf/201612211001

Cited by 10 publications

(6 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solutions for an explicit treatment of cluster formation are proposed in refs. [90][91][92]. Connections between nuclear clustering and (spinodal) multifragmentation might be proposed, considering that multifragmentation might act on defining nuclear sources with rather complex shape from which clustered structures might eventually emerge.…”

Section: Extent Of Different Clusterisation Processes In Heavy-ion Co...mentioning

confidence: 99%

Inhomogeneity growth in two-component fermionic systems

Napolitani

Colonna

2017

Phys. Rev. C

View full text Add to dashboard Cite

The dynamics of fermionic many-body systems is investigated in the framework of BoltzmannLangevin (BL) stochastic one-body approaches. Within the recently introduced BLOB model, we examine the interplay between mean-field effects and two-body correlations, of stochastic nature, for nuclear matter at moderate temperature and in several density conditions, corresponding to stable or mechanically unstable situations. Numerical results are compared to analytic expectations for the fluctuation amplitude of isoscalar and isovector densities, probing the link to the properties of the employed effective interaction, namely symmetry energy (for isovector modes) and incompressibility (for isoscalar modes). For unstable systems, clusterization is observed. The associated features are compared to analytical results for the typical length and time scales characterizing the growth of unstable modes in nuclear matter and for the isotopic variance of the emerging fragments. We show that the BLOB model is generally better suited than simplified approaches previously introduced to solve the BL equation, and it is therefore more advantageous in applications to open systems, like heavy ion collisions.

show abstract

Section: Extent Of Different Clusterisation Processes In Heavy-ion Co...mentioning

confidence: 99%

Inhomogeneity growth in two-component fermionic systems

Napolitani

Colonna

2017

Phys. Rev. C

View full text Add to dashboard Cite

show abstract

“…Multiplicity of different charged fragments in Xe+Sn collisions at 50 MeV/nucleon. Results from the AMD model of Ref [20],. including also heavier cluster formation from clustercluster collisions.…”

mentioning

confidence: 99%

Light cluster production at NICA

Bastian¹,

Batyuk²,

Blaschke³

et al. 2016

Eur. Phys. J. A

View full text Add to dashboard Cite

In a recent publication [1] the importance of measuaring light clusters at future NICA and FAIR experiments as "rare probes" for in-medium characteristics was presented. Within theoretical conciderations is shown how clusters would be affected by medium affects as given collider energies. PACS numbers: 25.75.-q Relativistic heavy-ion collisions 21.65.-f Nuclear Matter 21.60.Gx Cluster models 05.30.-d Quantum statistical mechanicsTo decide on characteristics of the matter produced in energetic nuclear collisions a variety of probes is needed that provide different perspectives. One class of such probes are nuclear clusters. Here we discuss the insights that the clusters can provide within the NICA program, both within fixed target and collider setups, at BM@N and MPD, respectively.To provide a general background we show in Fig. 1 a phase diagram of dense nuclear matter including lines for Mott dissociation of deuterons (d), tritons (t) and alpha particles (α), taken from [2], see also [3], together with the parametrization of the chemical freeze-out line [4] from statistical model fits of hadron production in heavy-ion collisions. Several laboratory energies from the energy range accessible at the NICA accelerator complex are shown as labeled dots on that line.For the sake of generating the illustration, the hadronic phase is described by a DD2 equation of state [5] with a liquid-gas phase transition (blue line with critical endpoint), extended by adding components of the hadron resonance gas, in particular pions and kaons. The quark-gluon matter phase for the figure is described by a PNJL model exhibiting a first * Presented at Critical Point and Onset of Deconfinement 2016, Wroc law (1) arXiv:1711.05631v1 [nucl-th]

show abstract

“…The modeling of these collisions using an Antisymmetrized Molecular Dynamics (AMD) code [28,29] coupled with the statistical code GEMINI [30] as an afterburner, and applying the experimental filter demonstrates that this is primarily an effect of energy thresholds.…”

Section: Methodsmentioning

confidence: 99%

“…2 shows the results of AMD-GEMINI calculations for this 35 MeV/nucleon 40 Ca + 40 Ca system filtered using our experimental geometries and thresholds. The AMD calculation [28,29] followed the reaction until 300 fm/c after the collision. The code GEMINI [30] was employed as an afterburner to de-excite the primary fragments.…”

Section: General Characterization Of the Reactionsmentioning

confidence: 99%

α -conjugate neck structures in the collisions of 35 MeV/nucleon Ca40 with Ca40

Schmidt¹,

Cao²,

Kim³

et al. 2017

Phys. Rev. C

View full text Add to dashboard Cite

The de-excitation of alpha-conjugate nuclei produced in reactions of 35 MeV/nucleon 40 Ca with 40 Ca has been investigated. Particular emphasis is placed on examining the dynamics of collisions leading to projectile-like fragment exit channels. A general exploration of the reaction systematics reveals the binary dissipative character of the collisions and a hierarchy effect similar to that seen for heavier systems. Investigation of the subset of events characterized by a total α-conjugate mass (α particles plus α-conjugate fragments) equal to 40 and atomic number equal to 20 reveal a dominance of α-conjugate exit channels. The hierarchy effect for these channels leads to the production of α-clustered neck structures with potentially exotic geometries and properties.

show abstract

Cluster production within antisymmetrized molecular dynamics

Cited by 10 publications

References 27 publications

Inhomogeneity growth in two-component fermionic systems

Inhomogeneity growth in two-component fermionic systems

Light cluster production at NICA

α -conjugate neck structures in the collisions of 35 MeV/nucleon Ca40 with Ca40

Contact Info

Product

Resources

About