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  • 1
    Electronic Resource
    Electronic Resource
    Cold rubidium molecule formation through photoassociation: A spectroscopic study of the 0 g - long-range state of 87 Rb 2 (2001)
    Springer
    The European physical journal 15 (2001), S. 189-198 
    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 report the detailed analysis of translationally cold rubidium molecule formation through photoassociation. Cold molecules are formed after spontaneous decay of photoexcited molecules from a laser cooled atomic sample, and are detected by selective mass spectroscopy after two-photon ionization into Rb 2 + ions. A spectroscopic study of the 0 g - (5 S + 5 P 3/2 ) pure long-range state of 87Rb2 is performed by detecting the ion yield as a function of the photoassociation laser frequency; the spectral data are theoretically analyzed within the semiclassical RKR approach. Molecular ionization is resonantly enhanced through either the 2 3 Π g or the 2 3 Σ + g intermediate molecular states. Some vibrational levels of the latter electronic state are observed and assigned here for the first time. Finally, cold molecules formation rates are calculated and compared to the experimentally measured ones, and the vibrational distribution of the formed molecules in the a 3 Σ + u ground triplet state is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170165
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  • 2
    Electronic Resource
    Electronic Resource
    Photoionization and detection of ultracold Cs 2 molecules through diffuse bands (2002)
    Springer
    The European physical journal 18 (2002), S. 365-370 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 33.80.Eh Autoionization, photoionization, and photodetachment – 33.80.Gj Diffuse spectra; predissociation, photodissociation – 33.80.Ps Optical cooling of molecules; trapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: We present the results of absorption measurements in a cesium vapor around 630 K, together with photoionization spectra through a resonance-enhanced two-photon absorption of ultracold cesium dimers created after photoassociation of ultracold cesium atoms. The maximum efficiency of the ultracold molecule ionization is found for wavelengths where absorption at thermal energies is the strongest, in agreement with our theoretical simulations of both processes, involving the so-called Cs2 diffuse bands. This result will be helpful for further optimization of such a direct way of detection of ultracold molecules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e20020042
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Orienting molecules using half-cycle pulses (2001)
    Springer
    The European physical journal 14 (2001), S. 249-255 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 33.80.-b Photon interactions with molecules – 32.80.Lg Mechanical effects of light on atoms, molecules, and ions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Using a rigid-rotor model, we study the orientation dynamics of polar diatomic molecules excited by experimentally available half-cycle pulses. The results of the numerical solution of the time-dependent Schrödinger equation are compared to those of an approximate “sudden-impact” impulsive model neglecting the molecular rotation during the pulse. We show that efficient orientation is achieved during time periods of several picoseconds for LiCl. For short pulses, where the kicked molecule model is valid, orientation turns out to be mainly sensitive to the time-integrated field amplitude and not the shape or rise time of the pulse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170223
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    Paper (German National Licenses)
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