Die DPG-Frühjahrstagung in Hannover musste abgesagt werden! Lesen Sie mehr ...

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MO: Fachverband Molekülphysik

MO 19: MO Poster 4

MO 19.14: Poster

Donnerstag, 12. März 2020, 17:00–19:00, Empore Lichthof

Analysis of the coupled states (2) ² Σ ⁺ and (1) ² Π of LiCa — •Julia Gerschmann^{1, 2}, Erik Schwanke^{1, 2}, Horst Knöckel^{1, 2}, Silke Ospelkaus^{1, 2}, and Eberhard Tiemann^{1, 2} — ¹Inst. f. Quantenopik, Leibniz Universität Hannover — ²Laboratory for Nano- and Quantum Engineering, Leibniz Universität Hannover

Molecules consisting of an alkaline and an alkaline earth atom have permanent electric and magnetic dipole moments. This allows manipulations of their states by external fields. Several ab initio calculations have been published on various combinations of a group IA and a group IIA atom. Experimentally, not so much is known about the molecular electronic states.

In 2011, we reported on spectroscopic work on ⁷Li⁴⁰Ca in a heat pipe. Via high resolution Fourier transform spectroscopy some states were investigated. Potential energy curve for the ground state (1)²Σ ⁺ was described up to v = 19. However, the transitions between the states (1)²Σ ⁺ and (2)²Σ ⁺ provided at that time only the description of v′≤ 1 and N′ up to 92 of the state (2)²Σ ⁺. Now we extend the experiment and analysis to include transitions from v′≤ 4 up to N′ = 120 of this state.

In addition, we see perturbations of (2)²Σ ⁺ rotational levels indicating a coupling to the (1) ² Π state, which will give molecular parameters of the (1) ² Π state.

We will report on the status of the investigations.