Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...520l..75p&link_type=abstract
The Astrophysical Journal, Volume 520, Issue 1, pp. L75-L78.
Astronomy and Astrophysics
Astronomy
23
Ism: Lines And Bands, Ism: Molecules, Methods: Laboratory, Molecular Data
Scientific paper
We present the infrared (IR) absorption spectrum of the jet-cooled naphthalene-Ar van der Waals cluster cation in the 400-1600 cm^-1 range, which is expected to resemble closely the IR spectrum of the bare naphthalene cation. Cluster cations are produced in their ground states via resonance-enhanced two-color ionization. Subsequent irradiation of the ions with IR light of a free-electron laser causes cluster dissociation, if this light is resonant with IR-active transitions of the cationic cluster. Mass-selective measurement of the dissociated fraction as a function of IR wavelength yields the IR spectrum of the cationic cluster. Comparison with previously reported Ar matrix isolation spectra of naphthalene^+ shows good agreement, with more bands observed in the present study. The IR spectrum observed is compared to a calculated spectrum of the naphthalene cation, allowing for unambiguous assignments of all the observed modes. The experimental method presented is generally applicable to obtain laboratory IR spectra of ionized polyaromatic hydrocarbons under astrophysically relevant conditions.
Helden Gert von
Meijer Gerard
Piest Hans
No associations
LandOfFree
Infrared Spectroscopy of Jet-cooled Cationic Polyaromatic Hydrocarbons: Naphthalene^+ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Infrared Spectroscopy of Jet-cooled Cationic Polyaromatic Hydrocarbons: Naphthalene^+, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared Spectroscopy of Jet-cooled Cationic Polyaromatic Hydrocarbons: Naphthalene^+ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1619853