DELOCALIZED FINAL-STATES IN THE AUGER-SPECTRA OF POLYPROPYLENE

A two-particle Green's function method combined with the ab initio mat rix-block negative-factor-counting technique is applied to the calcula tion of the Auger spectra of different conformations of polypropylene. In the calculated Auger spectra of isotactic polypropylene, an isolat ed narrow peak appears at low two-hole binding energy. This feature is not present in the calculated Auger spectra of syndiotactic polypropy lene and it only appears in a weaker form in the spectra of atactic po lypropylene. It is concluded that this spectral structure belongs to d elocalized final states of the Auger process.