NITISH GHOSH

About

I am Nitish Ghosh, and I completed my PhD in Physics from the Indian Institute of Technology Roorkee (IIT Roorkee), India, under the supervision of Prof. Lalita Sharma. My doctoral research focused on relativistic atomic-structure calculations, electron-impact excitation processes, low-energy scattering, continuum-state calculations, and collisional-radiative modelling for plasma spectroscopy and diagnostics.

My research involves the calculation of atomic parameters such as energy levels, transition probabilities, oscillator strengths, lifetimes, hyperfine-structure constants, and electron-impact excitation cross sections. I have used methods and codes including MCDHF, MBPT, GRASP2018, FAC, ColRadPy, and relativistic distorted-wave theory. I have also worked on fine-structure-resolved collisional-radiative models to interpret emission spectra from laser-produced and discharge plasmas.

My broader research interests include atomic data for plasma modelling, non-LTE plasma kinetics, plasma diagnostics, fusion-relevant impurities, highly charged ions, low-energy electron–ion scattering, and astrophysical opacity applications. I am particularly interested in connecting accurate theoretical atomic data and continuum processes with spectroscopic modelling for laboratory, fusion, and astrophysical plasmas.

Employment

• Indian Institute of Technology Roorkee PhD
  2021 - 2026

Education

• Jadavpur University M.Sc
  2019 - 2021
• Jadavpur University B.Sc
  2016 - 2019

Projects & Funding

Projects & funding information is unavailable.

Publications (5)

• Collisional-radiative diagnostics of laser-produced cadmium plasma
  Nitish Ghosh, Lalita Sharma
  Plasma Sources Science and Technology 2026 DOI: 10.1088/1361-6595/ae8dfe
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• Relativistic atomic structure and electron impact excitation calculations for K-like Kr17+ and Xe35+: A detailed study for fusion plasma relevance
  Nitish Ghosh, Lalita Sharma
  Radiation Physics and Chemistry 2026 DOI: 10.1016/j.radphyschem.2025.113273
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• A fine-structure-resolved collisional radiative model for Ti plasma
  Nitish Ghosh, Lalita Sharma
  Plasma Sources Science and Technology 2025 DOI: 10.1088/1361-6595/adf6d8
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• A comprehensive collisional radiative model for laser-produced Al plasma
  Nitish Ghosh, B R Geethika, Jinto Thomas +1 more
  Plasma Sources Science and Technology 2025 DOI: 10.1088/1361-6595/add9c8
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• Relativistic calculations of energy levels, lifetimes, transition parameters, and electron impact excitation cross sections for Kr XIX
  Journal of Quantitative Spectroscopy and Radiative Transfer 2024
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