Abstract
We investigate the role of thermal instability, arising from radiative cooling of an optically thin, ionized, dusty plasma, by linear stability analysis. The corresponding isobaric stability condition for condensation mode is found to be modified significantly by the concentration of finite sized, relatively heavy, and negatively charged dust particles. It has been shown that the radiation condensation mode is severely affected by the presence of dust particles. A distinct departure from the classical behavior (Field 1965) is that the existence of unstable acoustic modes depends on the dust-charge fluctuation parameter and is not affected by the cooling through radiation.
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