Discrete and Diffuse Emission Following Two-Photon Excitation of the E State in Molecular Iodine

Authors

D. L. Rousseau, Bell Laboratories, Murray Hill, New Jersey
P. F. Williams, University of Nebraska - LincolnFollow

Document Type

Article

Date of this Version

December 1974

Comments

Published in Physical Review Letters Volume 33, Number 23, 2 December 1974. Copyright © 1974 by the American Physical Society. Used by permission.

Abstract

We studied the fluorescence spectrum of E →B transitions in molecular iodine following two-photon absorption. Discrete re-emission lines terminating in B-state levels ranging from ν = 0 to the dissociation limit were observed in addition to a series of broad diffuse lines. These diffuse lines represent the first observation of Condon "internal diffraction” resulting from a single vibronic state, and therefore the variation of the bands directly displays the variation of the Franck-Condon factor.