Saba Majeed Gondal

@uet.edu.pk

Assistant Professor, Department of Physics
University of Engineering and Technology, Lahore, Pakistan



                    

https://researchid.co/sabagondal

EDUCATION

Ph.D. (Specialization in Theoretical and Mathematical Physics)
Title of Thesis: Beltrami States in Three Component Plasmas
MPhil (Specialization in Material Processing)
Title of Thesis: Characteristics of Gold Nanoparticles Embedded in Silicon by PLA

RESEARCH INTERESTS

• Theoretical Plasma Physics • Beltrami States • Plasma Astrophysics • Dusty Plasmas • Magneto-Fluid Coupling Theory • Solar Physics • Dynamo Theory • Stellar Atmospheres Physics • Coronal Mass Ejection • Magnetic Field and Flow structures • Fluid Dynamics.

9

Scopus Publications

Scopus Publications





  • Beltrami states in Earth's dusty mesosphere
    S. M. Gondal
    AIP Publishing
    The study is the description of a three fluid (electrons, ions, and negatively charged dust grains) model of dusty plasmas which is a strong coupling between the magnetic field and the fluid aspects of the plasma. The generalized vorticities and the associated flows become parallel to each other by satisfying the Beltrami condition. Having solved the steady-state solutions with the Ampere's law for the magnetic field has given rise to a quadruple Beltrami state. The self-organized state has four scale parameters. The dynamics of the magnetic field are illustrated graphically in the x–y plane. The characteristics of the self-organized structures are strongly influenced by the scale parameters and the mass of the negatively charged dust grains. The equilibria magnetic field structures for the Earth's mesosphere revealed diamagnetic behavior. A transition into a paramagnetic state from a diamagnetic state was observed by slightly decreasing the mass of the dust grains. This identification can be useful to study and understand the noctilucent cloud and polar mesospheric summer echo in the Earth's mesosphere. The current study will be suitable to study the environmental and defense science. Moreover, this work will be fruitful to understand the environment of the planet Earth in the future.

  • Quadruple Beltrami state in electron-depleted multi-ion dusty plasmas
    S. M. Gondal and M. Iqbal
    AIP Publishing
    In magnetized electron-depleted multi-ion dusty plasmas, a possibility of self-organization is determined. Making use of the equation of motion of the plasma's mobile species, i.e., a positive ion and two types of negative ions with Ampere's law, we obtain a quadruple Beltrami field. This higher order Beltrami field is characterized by four scale parameters. We have investigated the generation of self-organized structures. The typical length of these structures is attributed to the skin depth λp of positive ions. The influence of Beltrami parameters and scale parameters on the structure formation has also been investigated. It is found that there is a possibility of the formation of large scale structures of the order of system size and the formation of small scale structures of the order of skin depth simultaneously in the electron depleted multi-ion dusty plasmas, which are very useful to explain the dynamo theory. This study should be useful to describe the relaxed structures in space plasmas such as the D-region of Earth's mesosphere and F-ring of Saturn and in laboratory work where the dust particles are present as impurities.

  • Formation of large-scale structures in four-component dusty plasmas
    S.M. Gondal, M. Iqbal, F. Saleem, and A. Shuaib
    Wiley

  • Quadruple Beltrami fields in three component plasmas
    S. M. Gondal, M. Iqbal, Ashfaq H. Khosa, and G. Murtaza
    AIP Publishing
    A possibility of three component plasma to self-organize to Quadruple Beltrami State is explored. The Quadruple Beltrami State is characterized by four Beltarmi fields. The state emerges as a natural consequence of the contributions of all the linear and nonlinear forces present in an ideal plasma. The role of species density in the creation of relaxed structures is also investigated and found to be effective in transformation of field structures. The study will be helpful to understand formation of structures in astrophysical and laboratory plasmas.

  • Self-organized field structures in electron-depleted multi-ion dusty plasma
    M. Iqbal, S. M. Gondal, A. Shuaib, and Qurat-ul-ain
    Cambridge University Press (CUP)
    It is shown that there exists a strong interaction between the magnetic and kinetic aspects of a multi-ion plasma. The interaction appears as a system of simultaneous equations which show the alignment of vortices to flows and satisfy the Beltrami condition. Solving these equations lead to a non-force-free magnetic field which can be cast as a superposition of three multiscale force-free magnetic field configurations. It is the consequence of different Beltrami parameters of positive and negative ion fluids. It is also shown that self-organized paramagnetic and diamagnetic field structures could be created by varying the vorticities and flows of ion fluids.

RECENT SCHOLAR PUBLICATIONS

    Publications

    1. Title: Beltrami states in Earth’s dusty mesosphere
    Authors: S. M. Gondal
    Journal: Physics of Plasmas 27, 113703 (2020).
    2. Title: The possibility of relaxation in Quadruple Beltrami states in a four-component magneto dusty plasma Author: S. M. Gondal and M. Iqbal
    Journal: Physica Scripta 96, 015602 (2020).
    3. Title: Quadruple Beltrami fields in electron-depleted multi-ion dusty plasma
    Authors: S. M. Gondal, and M. Iqbal
    Journal: Physics of Plasmas 27, 083702 (2020).
    4. Title: Double Beltrami states and loss of equilibrium in electron, positron and ion Plasmas. Authors: S. M. Gondal, M. Iqbal, Shafa Ullah, M. Asghar and Ashfaq H. Khosa
    Journal: Journal of Plasma Physics 85, 905850306 (2019).
    5. Title: Formation of large-scale structures in four-component dusty plasmas.
    Authors: S. M. Gondal, M. Iqbal, F. Saleem, and A. Shuaib
    Journal: Contribution to Plasma Physics (2019). DOI: 10.1002/
    6. Title: Quadruple Beltrami field in three component plasmas.
    Authors: S. M. Gondal, M. Iqbal, Ashfaq H. Khosa, and G. Murtaza Journal: Physics of Plasmas 24, 062903 (2017).
    7. Title: Self-organized field structures in electron-depleted multi-ion dusty plasma.
    Authors: M. Iqbal, S. M. Gondal, A. Shuaib and Qurat-ul-ain
    Journal: Journal of Plasma Physics 81, 905810319 (2015).
    8. Title: Fabrication of gold nanoparticles by pulsed laser ablation.
    Authors: M. Khaleeq-ur-Rahman, K. Siraj, Saba Majeed Gondal, and M.S. Rafique
    Journal: Proceeding of the Pakistan Institute of Physics International Conference.
    ISBN: 969-9013-00-2 p. 163 (2009).