Effect of particle fluctuation on isoscaling and isobaric yield ratio of nuclear multifragmentation

Mallik, S.; Chaudhuri, Gargi

doi:10.1016/j.physletb.2013.10.011

Cited by 10 publications

(9 citation statements)

References 23 publications

(31 reference statements)

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“…While the asymmetry energy of nuclear matter is relatively well understood in the ground-state [6], heavyion collisions provide the ability to probe the EoS away from ground-state density and temperature. Numerous experiments have been conducted in order to place constraints on the density dependence of the asymmetry energy through a variety of experimental observables such as free neutron-proton ratios [6,8,9], isobaric yield ratios [10][11][12][13], isoscaling [12,[14][15][16][17][18][19][20][21][22][23][24][25], isospin diffusion [2,21,[26][27][28][29][30], collective flow [31][32][33][34][35][36][37] and neck dynamics/emission [38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

Neutron-proton equilibration in 35 MeV/ u collisions of 64,70 Zn + 64,70 Zn a

et al. 2018

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Previous work has quantified the degree of neutron-proton equilibration in heavy-ion nuclear collisions by observing the convergence of isospin observables (such as the isoscaling parameter α) to an expected value based on similar symmetric reaction systems. We present a new signature of equilibration: the convergence of the isospin asymmetry (as quantified by three isoscaling metrics) of two mirror asymmetric reaction systems towards each other rather than a pre-defined point. For the reactions of 35 MeV/u 64,70 Zn+ 64,70 Zn and 64 Zn, 64 Ni+ 64 Zn, 64 Ni the neutron-proton equilibration was found to be approximately 80%, and this result is compared directly to previous work.

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Section: Introductionmentioning

confidence: 99%

Neutron-proton equilibration in 35 MeV/ u collisions of 64,70 Zn + 64,70 Zn a

et al. 2018

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“…The present work is another effort in this direction. The fact that temperature can be estimated using this hybrid model facilitated the verification of similar temperature assumption made in the isoscaling equation [6][7][8]10]. In the next section we will briefly describe our model and then present the results in the subsequent section.…”

Section: Introductionmentioning

confidence: 91%

“…The study of isospin dependent observables in nuclear multifragmentation reaction around the Fermi energy domain is a subject of contemporary interest [1,2]. Different statistical models like Statistical Multifragmentation Model (SMM) [3], Canonical Thermodynamical Model [2,4], have been explored to investigate and verify the phenomenon of isoscaling [5][6][7][8][9] as observed in experiments [10][11][12][13][14][15]. The main motivation behind inclusion of isospin in the transport model based on Boltzmann-Uehling-Uhlenbeck (BUU) equation [2,16] was to study the isospin dependent observables in this framework.…”

Section: Introductionmentioning

confidence: 99%

“…More specifically we will examine the isotopic distributions of different elements from the two reactions and finally investigate if the well studied phenomenon of isoscaling emerges from our isospin dependent hybrid model. Isoscaling [6][7][8][9][10][11][12][13][14][15][25][26][27][28] is an important technique observed in certain reactions which depends crucially on the isospin of the system and thus can throw light on the symmetry energy [1]. This aspect has motivated both the the theoreticians and the experimentalists to study isoscaling and its relation with the symmetry energy coefficient.…”

Section: Introductionmentioning

confidence: 99%

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Isospin dependent hybrid model for studying isoscaling in heavy ion collisions around the Fermi energy domain

Mallik

Chaudhuri

2020

Nuclear Physics A

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Investigation of observables from nuclear multifragmentation reactions depending on isospin led to the development of a hybrid model. The mass and charge distribution as well as isotopic distribution was studied using this model for 112 Sn+ 112 Sn reaction as well as 124 Sn+ 124 Sn reactions at different energies. The agreement of the results obtained from the model with those from experimental data confirms the accuracy of the model. Isoscaling coefficients were extracted from these observables which can throw light on the symmetry energy coefficient. Another important facet of this model is that temperature of the studied reaction can be directly extracted using this model.

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“…The most important part of the thermal dynamical models are the break-up stage, which describes the explosion of the equilibrated source. The canonical/macrocanonical/microcanonical ensemble theories have been adopted to describe this stage [128,129,130,131,132,133].…”

Section: Thermaldynamics and Statistical Models 321 Thermaldynamicsmentioning

confidence: 99%

Shannon information entropy in heavy-ion collisions

2018

Progress in Particle and Nuclear Physics

101

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The general idea of information entropy provided by C.E. Shannon "hangs over everything we do" and can be applied to a great variety of problems once the connection between a distribution and the quantities of interest is found. The Shannon information entropy essentially quantify the information of a quantity with its specific distribution, for which the information entropy based methods have been deeply developed in many scientific areas including physics. The dynamical properties of heavy-ion collisions (HICs) process make it difficult and complex to study the nuclear matter and its evolution, for which Shannon information entropy theory can provide new methods and observables to understand the physical phenomena both theoretically and experimentally. To better understand the processes of HICs, the main characteristics of typical models, including the quantum molecular dynamics models, thermodynamics models, and statistical models, etc, are briefly introduced. The typical applications of Shannon information theory in HICs are collected, which cover the chaotic behavior in branching process of hadron collisions, the liquid-gas phase transition in HICs, and the isobaric difference scaling phenomenon for intermediate mass fragments produced in HICs of neutron-rich systems. Even though the present applications in heavy-ion collision physics are still relatively simple, it would shed light on key questions we are seeking for. It is suggested to further develop the information entropy methods in nuclear reactions models, as well as to develop new analysis methods to study the properties of nuclear matters in HICs, especially the evolution of dynamics system.

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Effect of particle fluctuation on isoscaling and isobaric yield ratio of nuclear multifragmentation

Cited by 10 publications

References 23 publications

Neutron-proton equilibration in 35 MeV/ u collisions of 64,70 Zn + 64,70 Zn a

Neutron-proton equilibration in 35 MeV/ u collisions of 64,70 Zn + 64,70 Zn a

Isospin dependent hybrid model for studying isoscaling in heavy ion collisions around the Fermi energy domain

Shannon information entropy in heavy-ion collisions

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