Impact of finite Larmor radius on the onset of Rayleigh-Taylor instability of stratified magnetised Jeffrey plasma fluid
DOI:
https://doi.org/10.24425/ather.2025.156840Abstract
This study explores the stabilising interplay of finite Larmor radius corrections and quantum pressure on the Rayleigh-Taylor instability in a non-Newtonian, magnetised fluid. The investigation is motivated by the need to understand how quantum and magnetohydrodynamic effects jointly influence instability behaviour in complex fluid systems. The governing magnetohydrodynamic equations are linearised using normal mode analysis and appropriate boundary conditions to derive a general dispersion relation for Rayleigh-Taylor instability under the Jeffrey fluid model. Numerical results show that the combined presence of finite Larmor radius corrections and quantum pressure suppresses the growth rate of Rayleigh-Taylor instability modes. In contrast, the Jeffrey parameter amplifies instability, while quantum and finite Larmor radius effects reduce both the cut-off and critical wavenumbers.References
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