It is possible to generate pseudopotentials for unbound states with for any higher L-component by Hamann's scheme [9]. For example, although no electron is occupied for the 3d state in the input file 'C.inp', the cutoff radius for the 3d state can be spefified as follows:
number.vps 3 <pseudo.NandL 0 2 0 1.50 0.0 1 2 1 1.62 0.0 2 3 2 1.00 0.0 pseudo.NandL>The pseudopotential generation of the 3d state will be generated with the cutoff radius, and then the reference energy is 0.0 (a.u.). A principal number and an angular momentum quantum number for the unbound state should be given as the state above occupied states but with the smallest principal number.