Title of Approved Individual Major

Chemical Physics

Primary Wellesley Thesis Advisor

Glenn Stark


Predissociation, a mechanism in which molecules are photodissociated by discrete bands of wavelengths, may help explain some anomalous oxygen and sulfur isotope ratios found in minerals formed at the birth of the solar system and on the early Earth. This thesis presents models of predissociation in two diatomics, sulfur monoxide (SO) and carbon monoxide (CO), using the Coupled Schrodinger Equation (CSE) method. In SO, two interactions were identified that could contribute to observed predissociation. In CO, a new model of predissociation in the B1Σ+-X1Σ+ system was developed.