Visible and infrared radiation polarization by dust grains absorption is a widely debated subject, with theoretical predictions, measurements, and numerical simulation tools. On the other hand, polarization by thermal emission is still waiting for CMB designed experiments for instance, to get its first precise and reliable data. PLEEZ is a numerical simulation code that computes the integration along the line of sight of such a radiation, once the physical parameters of the cloud that yield to polarized emission are provided, such as grain emission properties and alignment characteristics. The first step in PLEEZ implementation is presented here.
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