• Stochastic motion of a charged particle in a magnetic field: I Classical treatment

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    • Keywords

       

      Magnetic field-induced dynamics; weak collision-model; Boltzmann-Lorentz model; spectral lineshape; dissipative dynamics

    • Abstract

       

      We study the dissipative, classical dynamics of a charged particle in the presence of a magnetic field. Two stochastic models are employed, and a comparative analysis is made, one based on diffusion processes and the other on jump processes. In the literature on collision-broadening of spectral lines, these processes go under the epithet of weak-collision model and Boltzmann-Lorentz model, respectively. We apply our model calculation to investigate the effect of magnetic field on the collision-broadened spectral lines, when the emitter carries an electrical charge. The spectral lines show narrowing as the magnetic field is increased, the narrowing being sharper in the Boltzmann-Lorentz model than in the weak collision model.

    • Author Affiliations

       

      Jagmeet Singh1 2 Sushanta Dattagupta1

      1. School of Physical Sciences, Jawaharlal Nehru University, New Delhi - 110 067, India
      2. Physics Department, S.G.T.B. Khalsa College, University of Delhi, Delhi - 110 007, India
    • Dates

       
  • Pramana – Journal of Physics | News

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