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Title: Electronic spectra of astrophysically interesting cations

The electronic spectra of polyacetylene cations were recorded at 20K in the laboratory in an ion trap instrument. These can then be compared with diffuse interstellar band (DIB) absorptions. Examination of recently published data shows that the attribution of a weak DIB at ∼506.9 nm to diacetylene cation is not justified. Study of the higher excited electronic states of polyacetylene cations shows that their widths can still be sufficiently narrow for consideration as DIB carriers.
Authors:
; ; ;  [1]
  1. Department of Chemistry, University of Basel, Klingelbergstr. 80, CH-4056 Basel (Switzerland)
Publication Date:
OSTI Identifier:
22390903
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1642; Journal Issue: 1; Conference: ICCMSE-2010: International Conference of Computational Methods in Sciences and Engineering 2010, Kos (Greece), 3-8 Oct 2010; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION SPECTRA; ASTROPHYSICS; CATIONS; COMPARATIVE EVALUATIONS; ELECTRONIC STRUCTURE; EXCITED STATES; LEVEL WIDTHS; POLYACETYLENES; TEMPERATURE RANGE 0013-0065 K; TRAPS