Analysis of The Propagation Characteristics of THz Waves in The BGK Collision Model: Case of Oblique Incidence

One-dimensional Bhatnagar–Gross–Krook (BGK) collision model for weakly electrically separated dusty plasma is established, and the attenuation (ATT) coefficient was calculated by Wentzel-Kramers-Brillouin (WKB) method. The results show that the larger the incident angle, the easier it is for the dust plasma to suppress the absorption of THz wave. Moreover, changing some plasma parameters has different effects on the propagation characteristics of THz wave.