:term:`R_CONVERGENCE <R_CONVERGENCE (DETCI)>` """"""""""""""""""""""""""""""""""""""""""""" Convergence criterion for CI residual vector in the Davidson algorithm (RMS error). The default is 1e-4 for energies and 1e-7 for gradients. * **Type**: :ref:`conv double <op_c_conv>` * **Default**: 1e-4