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How to use a single atom to study invisble atoms and molecules

PhD defence, Monday, 4 October 2021. Emilie Hindbo Clausen.

2021.10.04 | Karen Konradi

Emilie Hindbo Clausen

During her PhD studies, Emilie Hindbo Clausen researched a method to investigate the energy levels of atomic and molecular ions. The technique is called Photon Recoil Spectroscopy (PRS), since it exploits the recoil kick transferred to an atom or molecule upon photon absorption. This makes it possible to study ions that do not scatter laser light fast and are therefore invisible on a detector. Specifically Emilie Hindbo Clausen studied Mg+ and MgH+ ions by means of a Ca+ ion, however the technique is in principle applicable to all charged atoms and molecules.

The new research findings contribute to the understanding of how PRS can be used in regimes where either the energy level itself or the interacting laser light covers a broad range of frequencies. The simultaneous probing of many frequencies in the latter scenario makes it a powerful tool for searching for still undetermined energy levels. 

The PhD study was completed at the Department of Physics and Astronomy, Faculty of Natural Sciences, Aarhus University.

This summary was prepared by the PhD student.

Time: Monday, 4 October at 13:00
Place: Building 1525, room 626, Department of Physics and Astronomy, Aarhus University, 8000 Aarhus C
Title of PhD thesis: Aspects of Sideband Unresolved Photon Recoil Spectroscopy of Atomic and Molecular Ions

Contact information: Emilie Hindbo Clausen, e-mail: hindbo@phys.au.dk, tel.: +45 20870938

Members of the assessment committee:

Professor Stefan Willitsch, Department of Chemistry, University of Basel, Switzerland

Chargée de recherche au CNRS Caroline Champenois, Department Physique des interaction ioniques et molécules, Aix-Marseille Université, France

Associate Professor Karsten Riisager (chairman), Department of Physics and Astronomy, Aarhus University, Denmark

Main supervisor:
Professor Michael Drewsen, Department of Physics and Astronomy, Aarhus University, Denmark

Co-supervisor:
Associate Professor Aurelien Dantan, Department of Physics and Astronomy, Aarhus University, Denmark

Language: The PhD dissertation will be defended in English

The defence is public.
Due to the coronavirus situation, the PhD thesis will not be available for reading at the offices of the PhD administration. Instead, interested parties may send an e-mail to gradschool.nat@au.dk to receive a digital copy of the PhD thesis. Please note, it may in certain cases be necessary to make an individual arrangement to read the PhD thesis.

PhD defence
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