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Hannover 2010 – scientific programme

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A: Fachverband Atomphysik

A 2: Atomic Systems in External Fields I

A 2.5: Talk

Monday, March 8, 2010, 15:00–15:15, F 107

Low-Field Mobilities in the Lanthanide Region — •Mustapha Laatiaoui1, Dieter Habs1, Hartmut Backe2, and Werner Lauth21Uni München (LMU), Fakultät für Physik, 85748 Garching — 2Uni Mainz, Institut für Kernphysik, 55099 Mainz

In the past, Ion Mobility Spectrometry (IMS) devices have proven to be powerful tools for state-selective mobility investigations at a variety of elements [1,2]. Hence, the mobility spectrometry increasingly gains importance if dealing with the heaviest elements, where relativistic effects strongly affect their valence electron configurations [3]. The aim of this contribution is to give an overview of low-field mobilities of rare-earth metals, where the electronic configuration is expected to be influenced by such relativistic effects. Most of the measured mobilities have shown a great similarity except for the element gadolinium. This observed deviation is assumed to be a direct consequence of occupying the d-orbital in gadolinium, which in turn has a big impact on its corresponding ion-atom interaction potential. This work is supported by the BMBF(06ML236I).
[1] P. Kemper et al., J. Am. Chem. Soc. 112 (1990) 3231.
[2] C. Iceman et al., J. Am. Soc. Mass Spectrom. 18 (2007) 1196.
[3] P. Indelicato et al., Eur. Phys. J. D 45 (2007) 155.

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