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Trapping and cooling of molecular ions in a linear paul trap

Ziel

The research project concerns cooling of molecular ions in a linear Paul ion trap. More specific the aim of the project is to produce molecular ions which are both external and internally cold and spatially extremely localized. Sympathetic cooling through Coulomb interactions with simultaneously trapped laser-cooled atomic ions will be used to cool the translational motion of the molecules. This cooling procedure will eventually lead to spatial localization of the molecular ions in an ion Coulomb crystal. Internally cold molecular ions in such crystals will created using various laser techniques like, e.g. state-selective removal of hot molecular ions from the trap by Resonance Enhanced Multi-Photon Ionization (REMPI). Detection of such or similar processes can effectively be done via spatially resolved optical detection of the rearrangement of the fluorescing atomic ions in the crystal caused by the removal of ionic molecules. One of the great perspectives of the project is state-selective quantum control of molecular physics processes. First training field is laser spectroscopy applications. I will get to know laser cooling techniques in ion traps, which is complementary to my experiences from working with magneto-optical traps. Working with ion traps and sympathetic cooling of ions at a Coulomb crystal is completely new to me. I expect to extend my knowledge of laser spectroscopic methods with cw lasers by working with ultra short pulsed lasers and spatially resolved imaging techniques. Furthermore I will be able to collect experiences in molecular physics and quantum chemistry, which is complementary to my previous studies in pure atomic and nuclear physics. Impact for the host is to join my previous knowledge from on-line experiments on short-lived isotopes with the trapping technology in Aarhus for new on-line ion trapping techniques for nuclear research. My previous experiences as experimental laser spectroscopist enable me to start with the project without a long training phase.

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UNIVERSITY OF AARHUS
EU-Beitrag
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Adresse
Ny Munkegade, Bygn. 520
8000 AARHUS C
Dänemark

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