The mathematical model for one interface must be specified through one of
ba.K_CorrelationModel
ba.LinearGrowthModel
ba.K_CorrelationModel(sigma, hurst, lateral_corr_length, max_spatial_freq=0.5)
where
sigma
is the root-mean-square amptitude of out-of-plane (transversal) fluctuations,hurst
is a fractal exponent H
with 0<H<1
,lateral_corr_length
is the lateral (in-plane) correlation length,max_spatial_freq
is a cut-off.This is the model of Palasantzas 1993. It adds a cut-off to the fractal roughness model of Sinha 1988.
ba.LinearGrowthModel(particle_volume, damp1, damp2, damp3, damp4, max_spatial_freq=0.5)
This is the model described by Stearns 1993 and extended by Stearns and Gullikson 2000.