# geoana.em.tdem.TransientPlaneWave.diffusion_distance#

property TransientPlaneWave.diffusion_distance#

Compute diffusion distance for a plane wave in a homogeneous electromagnetic media.

For a planewave source in a homogeneous media, the diffusion distance is the propagation distance the peak has travelled at a given time. It is sometimes referred to as the peak distance. The diffusion distance is a simple computation for how far a planewave has travelled after a certain time.

For the quasistatic case (no electric displacement), the diffusion distance is given by:

$D = \sqrt{\frac{2 t}{\mu \sigma}}$

where $$\mu$$ is the magnetic permeability, $$\sigma$$ is the electrical conductivity and t is the time.

Returns
float, np.ndarray

Diffusion distance at all times.