XAS STUDIES ON THE ROLE OF THE ALKALINE ION IN A LEAD-GLAZE SYSTEM G. DALBA, P. FORNASINI, F . ROCCA, A. KRAJEWSKI, A. RAVAGLIOLI and E. BURATTINI J. Phys. Colloques, 47 C8 (1986) C8-753-C8-756 DOI: 10.1051/jphyscol:19868143