Berlin 2001 – wissenschaftliches Programm

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MO: Molekülphysik

MO 12: Posters Friday: Spectroscopy

MO 12.6: Poster

Freitag, 6. April 2001, 12:30–15:00, AT3

Vibrationally excited state spectroscopy of CF and NO radicals in a supersonic plasma — •Gregory Bazalgette¹, Arjan Sprengers¹, Jaap Bulthuis¹, Wim Ubachs¹, Steven Stolte¹, Tomasz Motylewski², and Harold Linnartz² — ¹Laser centre Amsterdam, Departments of Chemistry and Physics VU, de Boelelaan 1081/1083, NL 1081 Amsterdam — ²Institute for Physical Chemistry, Klingelbergstrasse 80, CH 4056 Basel

A plasma source based on a multilayer discharge geometry in combination with a time-of-flight REMPI experiment is used to study rotationally cold spectra of highly excited vibrational states of mass selected CF and NO radicals. The rovibrational state distributions upon discharge excitation are characterized for the example of NO for ground state vibrational levels up to v″ = 18. Whereas rotational temperatures are lower than 50 K, a vibrational temperature of the order of T_vib = 6700±700 K is found. In the case of CF spectra of previously unaccessible transitions are obtained.