# C.1.10 Keyword: $multipole_field (May 16, 2021) A multipole field can be applied to the molecule under investigation by specifying the$multipole_field input section. Each line in this section consists of a single component of the applied field, in the following format:

$multipole_field field_component_1 value_1 field_component_2 value_2$end


Each field_component is stipulated using the Cartesian representation e.g., X, Y, and/or Z, (dipole field components); XX, XY, and/or YY (quadrupole field components); XXX, XXY, etc.. The value (magnitude) of each field component should be provided in atomic units.