title: Chirped-pulse Fourier transform millimeter-wave spectroscopy of ten vibrationally excited states of i-propyl cyanide: exploring the far-infrared region.
abstract: We report here further spectroscopic investigation of the astrochemically relevant molecule i-propyl cyanide. We observed and analysed the rotational spectra of the ground state of the molecule and ten vibrationally excited states with energies between 180-500 cm-1. For this, we used a segmented W-band spectrometer (75-110 GHz) and performed the experiments under room temperature conditions. This approach thus provides access to high-resolution, pure rotational data of vibrational modes that occur in the far-infrared fingerprint region, and that can be difficult to access with other techniques. The obtained, extensive data set will support further astronomical searches and identifications, such as in warmer regions of the interstellar space where contributions from vibrationally excited states become increasingly relevant.
authors: Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany. amanda.steber@mpsd.mpg.de melanie.schnell@mpsd.mpg.de and Center for Free-Electron Laser Science, Notkestrasse 85, D-22607 Hamburg, Germany.
authors: Benjamin E
authors: BE
authors: Arenas
authors: Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany. amanda.steber@mpsd.mpg.de melanie.schnell@mpsd.mpg.de and Center for Free-Electron Laser Science, Notkestrasse 85, D-22607 Hamburg, Germany and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany.
authors: Sébastien
authors: S
authors: Gruet
authors: Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany. amanda.steber@mpsd.mpg.de melanie.schnell@mpsd.mpg.de and Center for Free-Electron Laser Science, Notkestrasse 85, D-22607 Hamburg, Germany and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany.
authors: Amanda L
authors: http://orcid.org/0000-0002-8203-2174
authors: AL
authors: Steber
authors: Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse 1, D-85748 Garching, Germany.
authors: Barbara M
authors: BM
authors: Giuliano
authors: Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, D-22761 Hamburg, Germany. amanda.steber@mpsd.mpg.de melanie.schnell@mpsd.mpg.de and Center for Free-Electron Laser Science, Notkestrasse 85, D-22607 Hamburg, Germany and The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, D-22761 Hamburg, Germany.
authors: Melanie
authors: M
authors: Schnell