Emission Mössbauer spectroscopy at ISOLDE/CERN
Lundi 11 janvier 2016 11:00
- Duree : 1 heure
Lieu : Seminar Room 7/8 - ILL 1, 71 avenue des Martyrs, Grenoble
Orateur : Haraldur Páll GUNNLAUGSSON (Scientific Associate, Group leader Mössbauer collaboration at ISOLDE/CERN, CERN, PH Div, CH-1211 Geneve 23)
Mössbauer spectroscopy, or nuclear resonance emission/absorption of gamma quanta, can give unique local information on probe atoms including charge state, site symmetry and magnetic interactions amongst others. This local information can be out of reach for more conventionally applied techniques.
With emission Mössbauer spectroscopy (eMS), several new possibilities open. It is possible to measure on highly dilute doped systems, make use of special properties of the parent nucleus, such as recoil to create interstitial defects or make use of the chemical properties of the parent.
In my presentation, I will present the basics of Mössbauer spectroscopy and explain why the technique has been for example applied on the planet Mars. I will show recent highlights from using eMS at ISOLDE/CERN, in particular on dilute magnetic semiconductors and current development that is extending the possibilities of eMS at ISOLDE/CERN with additional possible elements. An outlook is given for possible collaborations with ILL.
Contact : tellier@ill.fr
Discipline évènement : (Physique)
Entité organisatrice : (ILL)
Nature évènement : (Séminaire)
Evènement répétitif : (General ILL Seminar - College 3)
Site de l'évènement : Polygone scientifique
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