Triplet—Triplet Transitions in Naphthalene

Abstract

A Pariser—Parr type CI calculation has been made for the triplet—triplet transitions of naphthalene. All configurations singly and doubly excited with respect to the lowest triplet state and with an energy relative to the lowest triplet not exceeding 7.5 eV have been taken into account. The results have taken away the discrepancy between previous calculations and the experimental observations by Porter and Windsor.