Browsing by Author "Sharma, Dhanpat"

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    Influence of symmetry energy on electromagnetic field during heavy-ion collisions
    (2025) Sharma, Dhanpat
    Heavy-ion collision simulations in intermediate energy regime using isospin quantum molecular dynamics model have been proposed as a novel means to glean information about the high density behaviour of nuclear matter. Herein, the influence of modelling the pressure gradient by changing stiffness parameter and isospin asymmetry on the dynamics of charged particles have been investigated. In this research, three different values of stiffness parameter, γ = 0.66 (soft), 1 (stiff) and 2 (super-stiff), to tune the anisotropic transverse pressure gradients have been considered to explore the influence of density-dependent symmetry energy Esym(ρ) = Esym(ρ0) ρ γ ρ0 on the electromagnetic field and energy density evolution. Stiffer symmetry energy (γ = 2) leads to larger pressure gradient than softer symmetry energy (γ = 0.66) that drives stronger expansion resulting in higher intensity of (eBy(0,0,0))max and |E · B|max. The correlation of eccentricity, nuclear stopping, centrality with the electromagnetic field and energy density have been established for different stiffness parameters. To deepen this study, the influence of isospin asymmetry (N/Z) on the time evolution of electromagnetic field has also been explored
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    Influence of symmetry energy on electromagnetic field during heavy-ion collisions
    (2025) Sharma, Dhanpat
    Heavy-ion collision simulations in intermediate energy regime using isospin quantum molecular dynamics model have been proposed as a novel means to glean information about the high density behaviour of nuclear matter. Herein, the influence of modelling the pressure gradient by changing stiffness parameter and isospin asymmetry on the dynamics of charged particles have been investigated. In this research, three different values of stiffness parameter, γ = 0.66 (soft), 1 (stiff) and 2 (super-stiff), to tune the anisotropic transverse pressure gradients have been considered to explore the influence of density-dependent symmetry energy Esym(ρ) = Esym(ρ0) ρ γ ρ0 on the electromagnetic field and energy density evolution. Stiffer symmetry energy (γ = 2) leads to larger pressure gradient than softer symmetry energy (γ = 0.66) that drives stronger expansion resulting in higher intensity of (eBy(0,0,0))max and |E · B|max. The correlation of eccentricity, nuclear stopping, centrality with the electromagnetic field and energy density have been established for different stiffness parameters. To deepen this study, the influence of isospin asymmetry (N/Z) on the time evolution of electromagnetic field has also been explored
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    Probing the contribution of various mass fragments in the production of magnetic field during heavy ion collisions
    (2025) Sharma, Dhanpat
    This research work delves into the contribution of different mass fragments in the generation of magnetic field during heavy ion collisions (HICs) in the intermediate energy regime. Isospin dependent quantum molecular dynamics (IQMD) framework has been employed as a primary tool for phase space along with minimum spanning tree with momentum cut (MSTP) algorithm for the clusterization process. In this study, temporal evolution of magnetic field due to various mass fragments and its correlation with the impact parameter have been visualized. Moreover, the influence of some significant observables, such as rapidity and transverse momentum on the production of magnetic field due to various mass fragments have been investigated to gain more insights.