# CUSTOM_ENV

Section can be repeated.

Parameters for a custom efield [Edit on GitHub]

## Keywords

- EFIELD_FILE_NAME

- TIMESTEP

## Keyword descriptions

EFIELD_FILE_NAME: string

  Usage: EFIELD_FILE_NAME filename

  Specify file that contains the electric field [V/m]. [Edit on GitHub]

TIMESTEP: real = 2.41888433E-002 [fs]

  Usage: TIMESTEP 1

  The time step between the entries in the list with the electric field. [Edit on GitHub]