XH DEFECTS IN NONMETALLIC SOLIDS - GENERAL-PROPERTIES OF MORSE OSCILLATORS

As part of a program to investigate light-atom vibrations associated w ith defects in nonmetallic solids, we have developed a general, dimens ionless procedure to solve for the energy levels, wave functions, and transition-matrix elements for Morse oscillators. We can thus readily investigate transition-strength anomalies associated with electrical a nharmonicities such as those recently observed in certain OH- and OD- systems in alkali halides. A center-of-mass correction in adapting the OH- dipole moment function to OD- is of central importance in interpr eting isotope effects on fundamental and overtone transition strengths .