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Electronic spectra of cold, large interstellar ions

Objective

The purpose of this project is to measure for the first time gas-phase spectra of large carbon containing cations, at low temperatures, which are of astrophysical importance. Knowledge of electronic spectroscopy of such molecules is also of pertinence in a number of areas of chemistry and physics, enabling their identification in planetary atmospheres, flames and plasmas and as intermediates in chemical reaction dynamics. This project is interdisciplinary, bridging the areas of chemistry, physics, and astrophysics. It encompasses state of the art techniques of chemical physics and aims at obtaining information to solve the long standing enigma in observational astronomy, the identification of some of the molecules causing absorption of starlight in diffuse interstellar clouds. The project uses ion trapping technology, whereby mass-selected species are held in a radio-frequency field and the vibrations and rotations are relaxed by collisions with cold helium to typical interstellar temperatures of 10-30 K. The electronic spectra of a number of cations, selected on the basis of their special properties including those of bare carbon chains, rings and fullerenes, polycyclic aromatic hydrocarbon cations and their protonated forms will be measured using new detection schemes. The first approach is based on photo-induced charge transfer which is turned on upon laser excitation and the second uses the possibility of rare-gas complexation in the ground but not excited state.

Field of science

  • /natural sciences/physical sciences/astronomy/observational astronomy
  • /natural sciences/physical sciences/astronomy
  • /natural sciences/chemical sciences/analytical chemistry/spectroscopy
  • /natural sciences/physical sciences/molecular and chemical physics
  • /natural sciences/physical sciences/astronomy/astrophysics
  • /natural sciences/physical sciences/optics/laser physics

Call for proposal

ERC-2009-AdG
See other projects for this call

Funding Scheme

ERC-AG - ERC Advanced Grant

Host institution

UNIVERSITAT BASEL
Address
Petersplatz 1
4051 Basel
Switzerland
Activity type
Higher or Secondary Education Establishments
EU contribution
€ 1 898 624
Principal investigator
John Paul Maier (Prof.)
Administrative Contact
Kurt Kamber (Mr.)

Beneficiaries (1)

UNIVERSITAT BASEL
Switzerland
EU contribution
€ 1 898 624
Address
Petersplatz 1
4051 Basel
Activity type
Higher or Secondary Education Establishments
Principal investigator
John Paul Maier (Prof.)
Administrative Contact
Kurt Kamber (Mr.)