This keyword specifies the weight function for the grid partitioning.
Options:
SCREENED / BECKE
SCREENED
A screened weight function is used. This is the default.
BECKE
The original Becke weight function is used. This option
also activates the calculation of weight derivatives.
Description:
The BECKE weight function [287] introduces a cubic scaling into the
grid generation [288]. By introducing a new piece-wise defined weight
function [118], near linear scaling for the grid generation can be
obtained. This weight function is specified with the option SCREENED.