2006/12/04 by Peter Staanum, A. Pashov, Asen Pashov +4 · 1 citation
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #physics.atom-ph #physics.chem-ph
paper · pdf · doi:10.1103/physreva.75.042513
published as Phys. Rev. A 75, 042513 (2007) · 10 pages, 5 figures. Submitted for publication
arxiv created 2006/12/04 · openalex publication_date 2007/04/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We present the first high-resolution spectroscopic study of LiCs. LiCs is formed in a heat-pipe oven and studied via laser-induced fluorescence Fourier-transform spectroscopy. By exciting molecules through the X\phantom\rule0.2em0ex1\ensuremathΣ+\text\ensuremath-B\phantom\rule0.2em0ex1\ensuremathΠ and X\phantom\rule0.2em0ex1\ensuremathΣ+\text\ensuremath-D\phantom\rule0.2em0ex1\ensuremathΠ transitions vibrational levels of the X\phantom\rule0.2em0ex1\ensuremathΣ+ ground state have been observed up to 3\phantom\rule0.3em0excm^\ensuremath-1 below the dissociation limit enabling an accurate construction of the potential. Furthermore, rovibrational levels in the a\phantom\rule0.2em0ex3\ensuremathΣ+ triplet ground state have been observed via singlet-triplet mixing in the higher excited states. With the help of coupled channels calculations, accurate singlet and triplet ground-state potentials were derived reaching the atomic ground-state asymptote. These potentials yield an accurate determination of the singlet and triplet ground-state dissociation energies and allow first predictions of cold collision properties of Li+Cs pairs.