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Osnabrück 2002 – wissenschaftliches Programm

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MO: Molekülphysik

MO 1: Elektronische Übergänge

MO 1.4: Vortrag

Montag, 4. März 2002, 14:45–15:00, HS 01/E01

Rotationally Resolved A2Πu X2Πg Electronic Transition of NC6N+ — •Harold Linnartz, David Pfluger, Olga Vaizert, Pawel Cias, Petre Birza, Dmitriy Korhoshev, and John P. Maier — Institut für Physikalische Chemie, Klingelbergstrasse 80, CH 4056 Basel

The rotationally resolved A2Πu − X2Πg electronic origin band spectrum of dicyano-diacetylene cation, NC6N+, has been recorded in the gas phase, using frequency-production double modulation spectroscopy in a liquid nitrogen cooled hollow cathode discharge and cavity ring down spectroscopy in a supersonic plasma. These techniques yield spectra with significantly different rotational profiles. The analysis of the complementary results provides accurate molecular parameters for the the two spin-orbit components in both electronic states. The results are compared with results of density functional theory calculations and the spectroscopic parameters available for the iso-electronic chains HC7N+ and HC8H+.

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