The influence of a phase transition on the shock wave dynamics in nuclear matter

Galitskii, V.M.; Mishustin, I. N.

doi:10.1016/0370-2693(78)90120-x

Cited by 28 publications

(11 citation statements)

References 8 publications

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“…Such a model was developed in [14][15][16][17][18] to extend the compression shock model [19][20][21][22][23] for regions of matter with anomalous thermodynamic properties. Similarly to nonrelativistic hydrodynamics [24], in the relativistic case the matter is thermodynamically normal, if the quantity Σ ≡…”

Section: Generalized Shock Adiabat Modelmentioning

confidence: 99%

“…The compression shock model of central nuclear collisions [19][20][21][22][23] allows one to determine the initial conditions for the subsequent hydrodynamic evolution. Such a picture of the collision process, which neglects the nuclear transparency, can be reasonably well justified at intermediate collision energies per nucleon 1 GeV ≤ E lab ≤ 15 GeV.…”

Section: Generalized Shock Adiabat Modelmentioning

confidence: 99%

“…In the region of instability the shock wave for W-kind models has to be replaced by the following hydrodynamic solution [15]: a shock between states O and A 2 (on the RHT adiabat shown in Fig. 3), followed by a compressional simple wave (see after the other may appear, if all transitions to the mixed phase are unstable [15,19].…”

Section: Generalized Shock Adiabat Modelmentioning

confidence: 99%

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Thermodynamically anomalous regions as a mixed phase signal

Bugaev

Ivanytskyi

Oliinychenko

et al. 2015

Phys. Part. Nuclei Lett.

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Abstract. Using the most advanced model of the hadron resonance gas we reveal, at chemical freeze-out, remarkable irregularities such as an abrupt change of the effective number of degrees of freedom and plateaus in the collision-energy dependence of the entropy per baryon, total pion number per baryon, and thermal pion number per baryon at laboratory energies 6.9-11.6 AGeV. On the basis of the generalized shock adiabat model we show that these plateaus give evidence for the thermodynamic anomalous properties of the mixed phase at its boundary to the quark-gluon plasma (QGP). A new signal for QGP formation is suggested and justified. PACS:25.75.Nq, 25.75.Dw

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Section: Generalized Shock Adiabat Modelmentioning

confidence: 99%

Section: Generalized Shock Adiabat Modelmentioning

confidence: 99%

Section: Generalized Shock Adiabat Modelmentioning

confidence: 99%

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Thermodynamically anomalous regions as a mixed phase signal

Bugaev

Ivanytskyi

Oliinychenko

et al. 2015

Phys. Part. Nuclei Lett.

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“…On the one hand, this fact demonstrates that despite the large error bars the performed analysis of the entropy per baryon, total pion number per baryon, and thermal pion number per baryon extracted from the data at chemical FO is able to detect hidden correlations between the plateaus in these quantities. On the other hand, if the plateaus at laboratory energies [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44] GeV are also generated by a mixed-phase instability, as it is the case for the set of plateaus found at lower collision energies, then this may provide evidence for a second phase transition.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamically anomalous regions and possible new signals of mixed-phase formation

et al. 2016

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Using an advanced version of the hadron resonance gas model we have found indications for irregularities in data for hadrons produced in relativistic heavy-ion collisions.These include an abrupt change of the effective number of degrees of freedom, a change of the slope of the ratio of lambda hyperons to protons at laboratory energies 8.6-11.6 AGeV, as well as highly correlated plateaus in the collision-energy dependence of the entropy per baryon, total pion number per baryon, and thermal pion number per baryon at laboratory energies 6.9-11.6 AGeV. Also, we observe a sharp peak in the dimensionless trace anomaly at a laboratory energy of 11.6 AGeV. On the basis of the generalized shock-adiabat model we demonstrate that these observations give evidence for the anomalous thermodynamic properties of the mixed phase at its boundary to the quark-gluon plasma. We argue that the trace-anomaly peak and the local minimum of the generalized specific volume observed at a laboratory energy of 11.6 AGeV provide a signal for the formation of a mixed phase between the quark-gluon plasma and the hadron phase. This naturally explains the change of slope in the energy dependence of the yield of lambda hyperons per proton at a laboratory energy of 8.6 GeV. 25.75.Nq Quark deconfinement, quark-gluon plasma production, and phase transitions 25.75.-q Relativistic heavy-ion collisions 25.75.Dw Particle and resonance production arXiv:1412.0718v2 [nucl-th]

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“…To describe such process, the authors of the paper "Central impact of relativistic nuclei" [15] have proposed the nuclear fireball model. Among theoretical models the shock wave model has been developed most of all [17][18][19][20][21]. A similar model appeared later on in paper [16].…”

Section: Discussionmentioning

confidence: 99%

Complete destruction of heavy nuclei by hadrons and nuclei

Tolstov

1981

Z Physik A

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The total disintegration is considered of nuclei with atomic weights ~ 100 and 200 by high energy hadrons and He 4, C 12 nuclei with a momentum of 4.5 GeV/c per nucleon. It is shown that mainly nucleons are emitted, and there is no residual nucleus the mass of which is comparable to that of the primary nucleus. The probability of total disintegration is considered as a function of projectile energy and mass. The multiplicity, energy and emission angle of particles are considered as well. It is shown that the density of nuclear matter in the overlap zone of colliding nuclei exceeds the usual one by a factor of ~ 4. A comparison is made with interaction models. A conclusion is drawn of the collective interaction mechanism (perhaps, of the shock wave type) of particle ejection from the target nucleus at the first stage of interaction and of explosive decay of the residual nucleus at the next one.

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The influence of a phase transition on the shock wave dynamics in nuclear matter

Cited by 28 publications

References 8 publications

Thermodynamically anomalous regions as a mixed phase signal

Thermodynamically anomalous regions as a mixed phase signal

Thermodynamically anomalous regions and possible new signals of mixed-phase formation

Complete destruction of heavy nuclei by hadrons and nuclei

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