Electronic Spectrum of C7H3+ in the Gas Phase at 10 K

Rice, C. A. and Hardy, F. -X. and Gause, O. and Maier, J. P.. (2015) Electronic Spectrum of C7H3+ in the Gas Phase at 10 K. The astrophysical journal. Part 2, Letters, Vol. 812, H. 1 , L4.

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Official URL: http://edoc.unibas.ch/dok/A6438801

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The analysis of the λ5797.1 diffuse interstellar band (DIB) by Huang & Oka concludes that the carrier is a chain-like molecule with five to seven heavy atoms with a large oscillator strength, f ≈ 1, for the electronic transition. The spectra of carbon chains of this size with transitions in the visible have been obtained in the gas phase, but the f-values are too small. We have now found that certain carbon-chain cations with transitions in the DIB range have large f-values. An example is the origin band at 4387.7 Å of the 1 1AA1 electronic transition of the H2C7H+ chain with f ≈ 0.3. This could be measured in the gas phase at 10 K in an ion trap. Astrophysical relevance of such cations is discussed.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Former Organization Units Chemistry > Physikalische Chemie (Maier)
UniBasel Contributors:Maier, John Paul and Rice, Corey Allen and Hardy, François-Xavier and Gause, Oliver
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:University of Chicago Press
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:06 Nov 2015 10:21
Deposited On:06 Nov 2015 10:21

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