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Picosecond Pump-Probe Laser System

English title Picosecond Pump-Probe Laser System
Applicant Maier John Paul
Number 113000
Funding scheme R'EQUIP
Research institution Physikalische Chemie Departement Chemie Universität Basel
Institution of higher education University of Basel - BS
Main discipline Physical Chemistry
Start/End 01.01.2007 - 31.12.2007
Approved amount 100'000.00
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Keywords (8)

Carbon-clusters; Radicals; Electronic-Spectra; Ions; Interstellar Molecules; Interstellar-molecules; spectroscopy; laser-methods

Lay Summary (English)

Lay summary
In order to extend the possibilities of the measurements of the electronic spectra of carbon containing radicals and their ions, a picosecond pump-probe laser system is required. This is needed in conjunction with two apparata developed and used hitherto in our studies. One investigates neutral radicals, produced in supersonic plasma discharges, by resonant two colour two photon ionization. In the other approach ions are held in a radiofrequency trap where their vibrational and rotational degrees of freedom are collisionally relaxed to low temperatures prior to excitation-dissociation processes using pump-probe schemes. The goal of the research to measure for the first time the electronic spectra of such transient species, as of relevance to astrophysical phenomena, combustion, plasma and atmospheric chemistry as well as interesting intermediates in chemical reactions. The laser system could only be installed in the laboratory in the last two months of the project’s period in 2007 as a number of financial sources had to be pooled to cover the ca CHF 300’000 total cost of the laser system.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Associated projects

Number Title Start Funding scheme
108863 28th International Symposium on Free Radicals 01.08.2005 Scientific Conferences