Figure 6
From: Narrow Energy Gap between Triplet and Singlet Excited States of Sn2+ in Borate Glass

Sn K-edge XANES spectra of the xSnO-(25-x)SrO-75B2O3 glasses along with those of SnO and (Sn0.02Sr0.98)B6O10 crystal for reference.
| The Sn K-edge energies of xSnO-(25.0-x)SrO-75.0B2O3 glasses were similar to that of SnO.