Joint AB/ISOLDE Seminar: Laser based techniques in ultratrace isotope production, spectroscopy and detection

by Klaus Wendt (University of Mainz, Germany)

Wednesday 21 Jan 2004, 16:00 → 17:00 Europe/Zurich

PS Auditorium (CERN)

Due to the multi mega barn cross sections of resonant optical processes and the discriminatory power realized with today's state-of-the-art laser systems, laser based techniques excel in the efficient and selective manipulation of exotic species available only in minute amounts. Laser induced photo detachment from atoms (i.e. multiple step resonance excitation and ionization) and from negative ions gives unsurpassed suppression of isobaric and isotopic interferences. The techniques are applied on thermal as well as on fast atomic or ionic beams and can favourably be combined with ion traps, bunchers and coolers or mass spectrometers. Approaches for ultra trace determination and atomic spectroscopy of rare exotic species (e.g. ³He, ⁴¹Ca, ^81,85Kr, ⁹⁰Sr, ^135,137Cs, ²³⁶U or actinide isotopes), used e.g. in bio-medical, environmental and fundamental studies, are very similar to methods required for selective isotope production at on-line facilities like ISOLDE. Background, experimental techniques, laser systems and selected results will be discussed in the presentation.

Organiser(s): Werner Herr / AB-ABP Department and Klaus Blaum / PH-IS Department
More information: http://cern.ch/AB-seminar/

Please note unusual day and time.

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