Europhys. Lett.
Volume 72, Number 4, November 2005
Page(s) 555 - 561
Section Atomic and molecular physics
Published online 14 October 2005
Europhys. Lett., 72 (4), pp. 555-561 (2005)
DOI: 10.1209/epl/i2005-10274-0

Rotation-vibration mixing of heteronuclear dimers in strong electric fields

R. González-Férez1 and P. Schmelcher2, 3

1  Departamento de Física Moderna and Instituto "Carlos I" de Física Teórica y Computacional, Universidad de Granada - E-18071 Granada, Spain
2  Theoretische Chemie, Physikalisch-Chemisches Institut - Im Neuenheimer Feld 229 D-69120 Heidelberg, Germany
3  Physikalisches Institut, Universität Heidelberg - Philosophenweg 12 D-69120 Heidelberg, Germany

received 5 July 2005; accepted in final form 20 September 2005
published online 14 October 2005

We investigate the evolution of the rovibrational spectrum of heteronuclear diatomic molecules exposed to a strong static electric field. The field induces avoided crossings causing a strong mixing of the electrically dressed rovibrational states. At the avoided crossing the molecular configuration is a strongly distorted and asymmetric one showing well-pronounced localization effects of the corresponding probability densities. The potential impact of our findings on the state-selective chemical reaction dynamics is discussed.

33.20.-t - Molecular spectra.
33.55.Be - Zeeman and Stark effects.
33.20.Vq - Vibration-rotation analysis.

© EDP Sciences 2005