cs_

plasmapy.formulary.cs_(T_e: Unit('K'), T_i: Unit('K'), ion: Union[str, Integral, Particle, CustomParticle], n_e: Unit('1 / m3') = None, k: Unit('1 / m') = None, gamma_e=1, gamma_i=3, z_mean=None)

Alias to ion_sound_speed.