Electromagnetic wave propagation in plasma

Transverse electromagnetic waves propagate in plasmas if their frequency is greater than the plasma frequency. For a given angular frequency, CO, there is a critical density, above which waves do not penetrate a plasma. The propagation of electromagnetic waves in plasmas has many uses, especially as a probe of plasma conditions. 

Electromagnetic wave propagation in plasma is described by the conventional wave equations ... 

At high frequencies co Ven), the absorption coefficient is proportional to the square of wavelength (/u., a co a therefore, short electromagnetic waves propagate in plasma more readily. 

---