rc_

plasmapy.formulary.lengths.rc_(B: Unit("T"), particle: ~typing.Union[str, ~numbers.Integral, ~plasmapy.particles.particle_class.Particle, ~plasmapy.particles.particle_class.CustomParticle], *, Vperp: Unit("m / s") = <Quantity nan m / s>, T: Unit("K") = None, lorentzfactor=nan, relativistic: bool = True) -> Unit("m")

Alias to gyroradius.