DPG Phi
Verhandlungen
Verhandlungen
DPG

Berlin 2001 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

MO: Molekülphysik

MO 12: Posters Friday: Spectroscopy

MO 12.9: Poster

Friday, April 6, 2001, 12:30–15:00, AT3

Vibronic levels of para triatomic hydrogen. — •I. Mistrik1, R. Reichle1, U. Müller1, H. Helm1, and M. Jungen21Fak. f. Physik, Univ.Freiburg, Herman-Herdern-Str. 3, 79104 Freiburg — 2Institute of Physical chemistry, Univ.Basel, Klingerbergstrasse 80, 4056 Basel, Switzerland

The metastability of H3 in the para form (I=1/2) is exploited in a photoexcitation study to investigate the vibronic structure of this molecule. From the rovibrational energy level positions of the doubly degenerate 3pE′ electronic state we suggest a novel interaction mechanism between the upper and the lower Jahn-Teller sheet of this state. Vibronic interactions in the 3pE′ state were also investigated by measuring high Rydberg states in a two photon excitation scheme[1,2]. Lifetime measurements[3] of low Rydberg states of H3 give further information on coupling mechanisms between singly excited Rydberg states as well as possible crossings with the lowest repulsive doubly excited states of H3. A theoretical investigation of the dynamics of the Rydberg states based on the ab initio potential energy surfaces will be presented at the conference. This work is supported by DFG (SFB 276, TP C13).

[1] R. Reichle, I. Mistrik, U. Müller, and H. Helm, Phys. Rev. A 60, (5) 3929 (1999).

[2] I. Mistrik, R. Reichle, U. Müller, H.Helm, M. Jungen and J. Stephens, Phys. Rev. A 61, (1) 033410 (2000).

[3] I. Mistrik, R. Reichle, U. Müller, H.Helm, accepted to Phys. Rev. A (2001)

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2001 > Berlin