Impact parameter dependence of the disappearance of flow and in-medium nucleon-nucleon cross section

Kumar, Suneel; Sharma, Manoj K.; Puri, Rajeev K.; Singh, Karamjit; Govil, I. M.

doi:10.1103/physrevc.58.3494

Cited by 65 publications

(63 citation statements)

References 20 publications

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“…[62,63], the relativistic effects do not play a significant role at these incident energies, and the intensity of sub-threshold particle production is very small. The phase space generated by the IQMD model has been analyzed using the minimum spanning-tree (MST) [24][25][26][27][28][29][30][31][32] method. The MST method binds two nucleons in a fragment if their distance is less than 4 fm.…”

Section: The Iqmd Modelmentioning

confidence: 99%

“…This is one of the widely used methods in intermediate-energy heavy-ion collisions. However, some improvements, such as momentum and binding energy, are also discussed in the literature [24][25][26][27][28][29][30][31][32]. In recent years, more sophisticated and complicated algorithms have also become available in the literature [64][65][66].…”

Section: The Iqmd Modelmentioning

confidence: 99%

“…All calculations are performed at = 200 fm/c. This time is chosen because of the saturation of the collective flow [24][25][26][27][28][29][30][31][32]. As our purpose in the present study is to understand the effects of participant-spectator matter on the excitation function of elliptical flow, we will concentrate on the rapidity distribution only [56].…”

Section: The Iqmd Modelmentioning

confidence: 99%

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Rapidity distribution as a probe for elliptical flow at intermediate energies

2011

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Abstract:The interplay between spectator and participant matter in heavy-ion collisions is investigated within the isospin-dependent quantum molecular dynamics (IQMD) model in terms of the rapidity distribution of light charged particles. The effect of different types and sizes of rapidity distributions is studied in elliptical flow.The elliptical-flow patterns show the important role of nearby spectator matter on the participant zone. This role is further explained on the basis of the passing time of the spectator and the expansion time of the participant zone. The transition from in-plane to out-of-plane emission is observed only when the midrapidity region is included into the rapidity bin. Otherwise no transition occurs. The transition energy is found to be highly sensitive to the size of the rapidity bin, while it is only weakly dependent on the type of the rapidity distribution. These theoretical findings are found to be in agreement with experimental results. PACS (

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Section: The Iqmd Modelmentioning

confidence: 99%

Section: The Iqmd Modelmentioning

confidence: 99%

Section: The Iqmd Modelmentioning

confidence: 99%

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Rapidity distribution as a probe for elliptical flow at intermediate energies

2011

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“…As explained in Ref [28]. and others, [14,23,24,27] an isotropic and constant nucleon-nucleon cross section between 40 and 55 mb is also employed.…”

Section: The Modelmentioning

confidence: 99%

Participant-spectator matter at the energy of vanishing flow

Sood

Puri

2009

Phys. Rev. C

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We aim to study the participant-spectator matter over a wide range of energies of vanishing flow and masses. For this, we employed different model parameters at central and semi-central colliding geometries. Remarkably, a nearly mass independent nature of the participant matter was obtained at the energy of vanishing flow. This makes it a very strong alternative candidate to study the energy of vanishing flow. We also show that the participant matter can also act as an indicator to study the degree of thermalization. The degree of thermalization reached in central collisions is nearly the same for different colliding nuclei at the energy of vanishing flow.

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“…Further increase in the excitation energy breaks colliding nuclei into many pieces [2]. Excitation energy of a reaction is also crucial to predict the nature of collective flow [3].…”

Section: Introductionmentioning

confidence: 99%

Towards the fusion of weakly bound projectiles with heavy targets with proximity based potentials

Kumari

2014

EPJ Web of Conferences

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Abstract. Theoretical calculations using proximity based potentials are performed to predict the fusion cross sections of the reactions of weakly bound projectiles especially halo nuclei with 209 Bi target. Both neutron halo as well as proton halo projectiles are taken in the present analysis. In particular, we study the role of extended nuclear radii of these weakly bound nuclei on the fusion cross sections. The inability of 8 B+ 58 Ni reaction to follow the systematics at above barrier energies motivates us to investigate the trend for the reactions of those weakly bound nuclei for which experiments are not yet performed. Our results indicate that extended radii of these weakly bound nuclei significantly affect fusion barrier heights as well as fusion probabilities throughout the energy range. We also study the fusion probabilities of a few reactions involving tightly bound projectiles.

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Impact parameter dependence of the disappearance of flow and in-medium nucleon-nucleon cross section

Cited by 65 publications

References 20 publications

Rapidity distribution as a probe for elliptical flow at intermediate energies

Rapidity distribution as a probe for elliptical flow at intermediate energies

Participant-spectator matter at the energy of vanishing flow

Towards the fusion of weakly bound projectiles with heavy targets with proximity based potentials

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