Welcome to the Triatomic Hydrogen Group at the Department of Molecular and Optical Physics - University of Freiburg, Germany
Vibrational Frequencies of the 2p2A2" and 3d2E" states of the triatomic deuterium molecule
U. Müller, M. Braun, R. Reichle and R. F. Salzgeber
Department of Molecular and Optical Physics, Albert-Ludwigs-Universität, Hermann-Herder-Strasse 3, D-79104 Freiburg, Germany
We investigated the vibrational energies in the 2p 2A
2¨ and 3d 2E¨ states of the triatomic deuterium molecule D3.
The experiments were performed using a fast neutral beam photoionization spectrometer recently developed
at Freiburg. A depletion type optical double-resonance scheme using two pulsed dye lasers was applied.
The measured vibrational frequencies of the 2p 2A
2¨ state of D3 are compared to those of H3 and to theoretical values calculated from an
ab initio potential energy surface.
The data give insight into the importance of the coupling between the valence electron and the ion core.
©1998 American Institute of Physics.
©1998 The Journal of Chemical Physics -- March 15, 1998 -- Volume 108, Issue 11, pp. 4478-4485
PACS: 33.15.Mt, 33.80.Eh, 33.40.+f