2008/06/30 by Mohsen Shadmehri, Sami Dib
Physics and Astronomy · #Astrophysics and Star Formation Studies #Atomic physics #Charged particle #Condensation #Cyclotron #Dust and Plasma Wave Phenomena #Dusty plasma #Growth rate #Instability #Ion #Ionization #Mechanics #Nuclear physics #Optics #Physics #Plasma #Solar and Space Plasma Dynamics #Thermodynamics #Wavelength #Wavenumber #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2009.14589.x
accepted by MNRAS
arxiv created 2009/02/03 · openalex publication_date 2009/03/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study thermal instability in a magnetized and partially ionized plasma with charged dust particles. Our linear analysis shows that the growth rate of the unstable modes in the presence of dust particles strongly depends on the ratio of the cooling rate and the modified dust-cyclotron frequency. If the cooling rate is less than the modified dust-cyclotron frequency, then the growth rate of the condensation modes does not modify due to the existence of the charged dust particles. But, when the cooling rate is greater than (or comparable to) the modified dust-cyclotron frequency, the growth rate of unstable modes increases because of the dust particles. Also, the wavenumber of the perturbations corresponding to the maximum growth rate shifts to the smaller values (larger wavelengths) as the cooling rate becomes larger than the modified dust-cyclotron frequency. We show that the growth rate of the condensation modes increases with the electrical charge of the dust particles.