Optical absorption which was due to a pair of H and O atoms was found here for the first time. The H was introduced by annealing the specimen in a H atmosphere at 1200C, followed by quenching. There was no optical absorption, due to H-O pairs, in the as-quenched state. The H-O pairs were created during annealing. That is, they were created at temperatures above 40C, dissociated at temperatures above 80C, and disappeared at temperatures above 110C during isochronal (600s) annealing in 20C intervals; beginning at 40C. The peak positions of H-O and D-O pairs were 1075.0 and 1076.3/cm, respectively.

V.P.Markevich, M.Suezawa, K.Sumino: Materials Science Forum, 1995, 196-201, 915-20