Nuclear disintegration in relativistic heavy ion collisions

doi:10.1016/0375-9474(82)90199-3

Nuclear Physics A

Volume 387, Issue 1, 11 October 1982, Pages 177-189

https://doi.org/10.1016/0375-9474(82)90199-3 Get rights and content

Abstract

The breakdown of the participant spectator model for central relativistic nuclear collisions is discussed and a different picture of a hot spot followed by a target explosion is suggested to be more consistent with the data.

References (21)

K. Van Bibber et al.
Phys. Rev. Lett.
(1979)
G.D. Westfall et al.
Phys. Rev. Lett.
(1976)
J. Gosset et al.
Phys. Rev.
(1977)
A. Mekjian
Phys. Rev. Lett.
(1977)
A. Mekjian
Phys. Rev.
(1978)
A.A. Amsden et al.
Phys. Rev.
(2059)
A.A. Amsden et al.
Phys. Rev.
(2080)
H. Stöcker et al.
Z. Physik
(1978)
H. Stöcker et al.
Z. Physik
(1979)
Y. Yariv et al.
Phys. Rev.
(1979)
Y. Yariv et al.
Phys. Rev.
(1981)
A. Sandoval et al.
Phys. Rev.
(1980)
W.D. Myers
Nucl. Phys.
(1978)
J. Gosset et al.
Phys. Rev.
(844)
G.D. Westfall, private communications, March...A.M. Poskanzer et al.
Phys. Rev.
(1071)
A.M. Zebelman et al.
Phys. Rev.
(1975)
W.G. Meyer et al.
Phys. Rev.
(1980)
ANL-GSI-LBL Coll. Experiment 489H at the...
H.H. Gutbrod

There are more references available in the full text version of this article.

Cited by (44)

Thermodynamical features of multifragmentation in peripheral Au + Au collisions at 35 A MeV
1999, Nuclear Physics A
The distribution of fragments produced in events involving the multifragmentation of excited sources is studied for peripheral Au + Au reactions at 35 A MeV.
The Quasi-Projectile has been reconstructed from its de-excitation products. An isotropic emission in its rest frame has been observed, indicating that an equilibrated system has been formed. The excitation energy of the Quasi-Projectile has been determined via calorimetry.
A new event by event effective thermometer is proposed based on the energy balance. A peak in the energy fluctuations is observed related to the heat capacity suggesting that the system undergoes a liquid-gas type phase transition at an excitation energy ∼ 5 A MeV and a temperature 4–6 MeV, dependent on the freeze-out hypothesis. By analyzing different regions of the Campiplot, the events associated with the liquid and gas phases as well as the critical region are thermodynamically characterized.
The critical exponents, τ, β, γ, extracted from the high moments of the charge distribution are consistent with a liquid-gas type phase transition.
Central collisions of Au on Au at 150, 250 and 400 A·MeV
1997, Nuclear Physics A
Collisions of Au on Au at incident energies of 150, 250 and 400 A·MeV were studied with the FOPI-facility at GSI Darmstadt. Nuclear charge (Z ⩽ 15) and velocity of the products were detected with full azimuthal acceptance at laboratory angles 1° ⩽ θlab ⩽ 30°. Isotope separated light charged particles were measured with movable multiple telescopes in an angular range of 6–90°. Central collisions representing about 1% of the reaction cross section were selected by requiring high total transverse energy, but vanishing side flow. The velocity space distributions and yields of the emitted fragments are reported. the data are analysed in terms of a thermal model including radial flow. A comparison with predictions of the quantum molecular model is presented.
Individual fragment yields and determination of the critical exponent σ
1996, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
We have studied the yield of individual fragments formed in the projectile fragmentation of gold nuclei at 1 AGeV incident on a carbon target as a function of the total charge multiplicity. The yields of fragments of different nuclear charge peak at different multiplicities. We show that this behavior can be used to determine the critical exponent σ. We obtain σ = 0.68±0.05, consistent with the liquid-gas value.
Second order phase transitions: From infinite to finite systems
1996, Nuclear Physics A
We investigate the Equation of State (EOS) of classical systems having 300 and 512 particles confined in a box with periodic boundary conditions. We show that such a system, independently on the number of particles investigated, has a critical density of about $13$ the ground state density and a critical temperature of about 2.5 MeV. The mass distribution at the critical point exhibits a power law with $τ = 2.23$ . Making use of the grand partition function of Fisher's droplet model, we obtain an analytical EOS around the critical point in good agreement with the one extracted from the numerical simulations.
Signals of the liquid-gas phase transition in the fragmentation of hot nuclei: Finite-size scaling
1991, Nuclear Physics, Section A
The distributions of fragments produced in events involving the multifragmentation of hot nuclei are compared with the cluster distributions predicted by a bond percolation model on a finite lattice. The nuclear events are generated by a microcanonical Metropolis sampling method. This comparison makes it possible within the model to separate the events due to the nuclear liquid-gas phase transition from the “hot fission” events. The latter events correspond to a phenomenon that is peculiar to the nuclear case and that reflects the role of the long-range Coulomb force. Finite-size scaling methods are used to analyze the percolation and nuclear liquid-gas phase transitions and to determine the appropriate critical exponents. The influence of the Coulomb force on the critical behaviour of the nuclear liquid-gas phase transition is discussed.
Thermostatic properties of finite and infinite nuclear systems
1990, Nuclear Physics, Section A
From a constructed finite-range momentum- and density-dependent effective interaction, we arrive at the equation of state for infinite nuclear matter. This interaction reproduces ground-state properties of finite nuclear systems; in addition it gives a proper energy dependence of the single-particle potential. For symmetric and asymmetric hot nuclear matter, we find the critical and phase-separation temperature, the specific heats, incompressibility and variations of effective mass with temperature and density. For finite nuclei, we also find the limiting temperature, i.e. the maximum temperature that such nuclear systems can sustain.

View all citing articles on Scopus

View full text

The CeBrA demonstrator for particle- $γ$ coincidence experiments at the FSU Super-Enge Split-Pole Spectrograph
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 1058, 2024, Article 168827
A.L. Conley, …, I. Wiedenhöver
SLICES: Spes Low-energy Internal Conversion Electron Spectrometer
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 1020, 2021, Article 165860
N. Marchini, …, M. Perri
SPIDER: A Silicon PIe DEtectoR for low-energy Coulomb-excitation measurements
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 971, 2020, Article 164030
M. Rocchini, …, A. Tredici
Treatment of background in $γ$ - $γ$ fast-timing measurements
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 928, 2019, pp. 93-103
E.R. Gamba, …, M. Rudigier
The return of the prodigy son: Do return migrants make better leaders?
Journal of Development Economics, Volume 122, 2016, pp. 76-91
Marion Mercier
The role of core excitations in the structure and decay of the 16⁺ spin-gap isomer in ⁹⁶Cd
Physics Letters B, Volume 767, 2017, pp. 474-479
P.J. Davies, …, Y. Zhu

Nuclear disintegration in relativistic heavy ion collisions

Abstract

Phys. Rev. Lett.

Phys. Rev. Lett.

Phys. Rev.

Phys. Rev. Lett.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Z. Physik

Z. Physik

Phys. Rev.

Phys. Rev.

Phys. Rev.

Nucl. Phys.

Phys. Rev.

Phys. Rev.

Phys. Rev.

Phys. Rev.