Asymmetry dependence of the nuclear caloric curve

A.B. McIntosh; A. Bonasera; P. Cammarata; K. Hagel; L. Heilborn; Z. Kohley; J. Mabiala; L.W. May; P. Marini; A. Raphelt; G.A. Souliotis; S. Wuenschel; A. Zarrella; S.J. Yennello

doi:10.1016/j.physletb.2012.12.073

Probing Dense QCD Matter: Muon Measurements with the CBM Experiment at FAIR

Particles ◽

10.3390/particles4020019 ◽

2021 ◽

Vol 4 (2) ◽

pp. 205-213

Author(s):

Anna Senger ◽

Peter Senger

Keyword(s):

Performance Studies ◽

Reaction Rates ◽

High Density ◽

Streaming Data ◽

Qcd Phase Diagram ◽

Chemical Potentials ◽

Muon Pairs ◽

Caloric Curve ◽

Density Equation

The Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) in Darmstadt is designed to investigate the properties of high-density QCD matter with multi-differential measurements of hadrons and leptons, including rare probes such as multi-strange anti-hyperons and charmed particles. The research program covers the study of the high-density equation-of-state of nuclear matter and the exploration of the QCD phase diagram at large baryon chemical potentials, including the search for quark matter and the critical endpoint of a hypothetical 1st order phase transition. The CBM setup comprises detector systems for the identification of charged hadrons, electrons, and muons; for the determination of collision centrality and the orientation of the reaction plane; and a free-streaming data read-out and acquisition system, which allows online reconstruction and selection of events up to reaction rates of 10 MHz. In this article, emphasis is placed on the measurement of muon pairs in Au-Au collisions at FAIR beam energies, which are unique probes used to determine the temperature of the fireball, and hence to search for a caloric curve of QCD matter. Simultaneously, the subthreshold production of charmonium can be studied via its dimuon decay in order to shed light on the microscopic structure of QCD matter at high baryon densities. The CBM setup with focus on dimuon measurements and the results of the corresponding physics performance studies will be presented.

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Obtaining the caloric curve from collisions

Physical Review C ◽

10.1103/physrevc.64.044605 ◽

2001 ◽

Vol 64 (4) ◽

Cited By ~ 15

Author(s):

A. Chernomoretz ◽

C. O. Dorso ◽

J. A. López

Keyword(s):

Caloric Curve

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Caloric curve for finite nuclei in Thomas-Fermi theory

Physical Review C ◽

10.1103/physrevc.55.r1641 ◽

1997 ◽

Vol 55 (4) ◽

pp. R1641-R1644 ◽

Cited By ~ 25

Author(s):

J. N. De ◽

S. Das Gupta ◽

S. Shlomo ◽

S. K. Samaddar

Keyword(s):

Fermi Theory ◽

Thomas Fermi ◽

Caloric Curve ◽

Finite Nuclei

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Isoscaling bearing information on the nuclear caloric curve

Physical Review C ◽

10.1103/physrevc.69.031607 ◽

2004 ◽

Vol 69 (3) ◽

Cited By ~ 17

Author(s):

S. Souza ◽

R. Donangelo ◽

W. Lynch ◽

W. Tan ◽

M. Tsang

Keyword(s):

Caloric Curve

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Investigation of the chemical ordering and thermal properties of the Rh–Ag–Au nanoalloys

International Journal of Modern Physics C ◽

10.1142/s0129183122500802 ◽

2021 ◽

Author(s):

Huseyin Yildirim

Keyword(s):

Md Simulation ◽

Energy Analysis ◽

Surface Melting ◽

Melting Temperatures ◽

The Third ◽

Chemical Ordering ◽

Caloric Curve ◽

The Difference ◽

Two Stages ◽

Gupta Potential

In this paper, the melting behaviors of Rh–Ag–Au nanoalloys are investigated with MD simulation. For Rh–Ag–Au nanoalloys, icosahedron structure was considered. The local optimizations of Rh–Ag–Au nanoalloys were carried out with the BH algorithm. The interatomic interactions were modeled with the Gupta potential. The local optimization results of Rh–Ag–Au nanoalloys show that Au and Ag atoms prefer to locate on the surface, and Rh atoms prefer to locate in the inner shells. The bond order parameter result is compatible with the excess energy analysis. It is noted that structures with more Ag–Au bonds are more energetically stable. Caloric curve, heat capacity, Lindemann index, and RMSD methods were used for estimating the melting temperatures of Rh–Ag–Au nanoalloys. According to the simulation results, melting temperatures depend on the composition. Also, it is discovered that nanoalloys are generally melting in two stages. Surface melting of the third shell is occupied by Ag and Au atoms, and then homogeneous melting of the inner shells is occupied by Rh atoms. It is found that the difference between surface melting temperatures and homogeneous melting temperatures in Ag-poor compositions is more significant than that of Ag-rich nanoalloys. In addition, the melting temperatures of the nanoalloys are found to be increased as the size of nanoalloys increases.

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