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  • 1
    Electronic Resource
    Electronic Resource
    Realization of a Ramsey-Bordé matter wave interferometer on the molecule (2000)
    Springer
    The European physical journal 12 (2000), S. 235-240 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 03.75.Dg Atom and neutron interferometry - 42.50.Vk Mechanical effects of light on atoms, molecules, electrons, and ions - 42.62.Fi Laser spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We show first results and systematic investigations of a matter wave interferometer with the K2 molecule, using a transition between the electronic ground state X and the state b . This spin forbidden transition is observable due to spin-orbit coupling between the states b and A . The experimental results are compared with numerical simulations, which show the power of the interferometer to observe small phase shifts by weak interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530070018
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  • 2
    Electronic Resource
    Electronic Resource
    Line shape analysis of two-colour photoassociation spectra on the example of the Cs ground state (2002)
    Springer
    The European physical journal 21 (2002), S. 299-309 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 33.70.Jg Line and band widths, shapes, and shifts – 32.80.Pj Optical cooling of atoms; trapping – 34.50.Rk Laser-modified scattering and reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Two-photon photoassociation spectra in a Λ-type excitation scheme are analysed under the systematically varied experimental conditions of frequency detunings and laser intensities. Line shape fits are presented as well as the investigation of intensity and detuning dependent line shifts. From both we determine the attained spectroscopic precision, that is corrected for a systematic line shift due to the thermal distribution of atoms in the trap. An energy correction for this effect is given. Information about the feasibility of generating translationally cold molecules in a well defined rotational and vibrational level by the photoassociation process is derived from the analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e2002-00209-9
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  • 3
    Electronic Resource
    Electronic Resource
    Inversion analysis of K 2 coupled electronic states with the Fourier grid method (2001)
    Springer
    The European physical journal 17 (2001), S. 319-328 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 32.80.Pj Optical cooling of atoms; trapping – 34.50.Rk Laser-modified scattering and reactions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We present a new determination of the potential curves and interactions of the coupled electronic states A 1 Σ + u and b 3 Π u of the potassium dimer, based on new laser spectroscopy measurements within a molecular beam, combined with data available in the literature. We used a new global deperturbation approach, involving the Fourier Grid Hamiltonian method for energy level calculation. A standard deviation of 1.2 is obtained corresponding to a variance of 7.5×10 -3 cm-1, representing a significant improvement compared to the standard deviation of 4 yielded by the traditional local deperturbation approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170006
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  • 4
    Electronic Resource
    Electronic Resource
    Accurate asymptotic ground state potential curves of Cs $\mathsf{_2}$ from two-colour photoassociation (2004)
    Springer
    The European physical journal 28 (2004), S. 351-360 
    Details
    ISSN: 1434-6079
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Over 100 high lying level energies of the lowest electronic states $X^1{\rm\Sigma}^ + _g$ and $a^3{\rm\Sigma}^ + _u$ in Cs2 are determined in a $\Lambda$ -like scheme two-colour photoassociation spectroscopy. The results are analyzed with a coupled channel model using an asymptotic approach, based on nodal lines. From this analysis we determine the long range dispersion coefficient C6 to 6846.2 $\pm$ 15.6 a.u. We also obtain the first experimental determination of the amplitude of the asymptotic exchange term.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e2004-00001-y
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    Paper (German National Licenses)
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