Hannover 2020 – scientific programme
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MO: Fachverband Molekülphysik
MO 15: MO Poster 3
MO 15.14: Poster
Wednesday, March 11, 2020, 17:00–19:00, Empore Lichthof
Chirped-Pulse Microwave Spectroscopy of Complex Molecules — •Bettina Heyne1, Marius Hermanns1, Nadine Wehres1, Christian Endres2, and Stephan Schlemmer1 — 1First Physics Institute, University of Cologne, Germany — 2Max Planck Institute for Extraterrestrial Physics, Garching, Germany
The Cologne chirped-pulse microwave spectrometer for molecules relevant for astrophysics is operational between 12 and 26.5 GHz and has been described before [1]. Here, the basic principle and the experimental setup will be presented [2]. First, noise measurements taken with the hot-cold method will be discussed. Furthermore, the sensitivity was determined by using a spectrum of OCS and its different isotopologs. Moreover, a closer examination of OCS at different temperatures will be shown and an intensity calibration will be performed. In addition, a spectrum of 2-cyanobutane recorded with a heatable nozzle will be presented.
References: [1] M. Hermanns, N. Wehres, F. Lewen, H.S.P. Müller, S. Schlemmer, Journal of Molecular Spectroscopy, 358, 25-36 (2019)
[2] B. Heyne, Master Thesis 'Chirped-Pulse Fourier Transform Spectroscopy of Complex Molecules' (2019)