Ultrasoft pseudopotential with two gipaw projectors per
s and p channel, only one projector for d-channel.
Local part is d.

This pseudopotential has been used to calculate
O K-edge spectra of SiO2 (alpha-quartz) in the absence 
of a core-hole in the final state using the XSPECTRA
code. 
Results with this pseudopotential are published in

"First-principles calculations of x-ray absorption in a scheme 
based on ultrasoft pseudopotentials: From alpha-quartz to 
high-Tc  compounds",

Christos Gougoussis, Matteo Calandra, Ari P. Seitsonen, and Francesco Mauri
Phys. Rev. B 80, 075102 (2009)

http://link.aps.org/doi/10.1103/PhysRevB.80.075102