Search Results - (Author, Cooperation:Georg Zimmerer)

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  1. 1
    Chao-shu Shi ; Thomas Kloiber ; Georg Zimmerer

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-2313
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0022-2313(91)90201-6

    Articles: DFG German National Licenses
  2. 2
    Keto, J. W. ; Cai, Hong ; Kykta, Martin ; Lei, Chen ; Möller, Thomas ; Zimmerer, Georg

    College Park, Md. : American Institute of Physics (AIP)
    Published 1997
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    We report experiments studying the fluorescence and two-photon excitation spectroscopy of xenon dimers and small clusters formed in supersonic jets. Under thermodynamic conditions for maximum dimer density, determined by two-photon resonant multiphoton ionized time-of-flight (TOF) spectroscopy, no fluorescence of free bound excimers correlating to Xe* 6p[1/2]0, 6p[3/2]2, or 6p[5/2]2 was observed; very weak excimer fluorescence was observed for the excimer correlated with Xe+Xe* 5d[1/2]1. Comparing the observed atomic fluorescence and measurements of the monomer–dimer ratio, we estimate predissociation lifetimes on the order of 10−3 of the expected radiative lifetime. TOF spectra are consistent with predissociation for all excimers except those correlating to 6p[5/2]2. At higher nozzle stagnation pressures, we observed fluorescence from vibrationally or electronically relaxed Xe2* excimers imbedded in helium clusters Hn, with 〈n〉 most probably 6 and 13. We report dispersed spectra, and using modeled reflection spectra, we assign the fluorescence spectra to 6p[1/2]00g+→6s[3/2]1B0u+, 6p[1/2]00g+→6s[3/2]11u, and 5d[1/2]10g+→6s[3/2]2A1u. © 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.474276

    Articles: DFG German National Licenses
  3. 3
    Zimmerer, Georg
    Springer
    Published 1998
    Staff View
    ISSN:
    1573-7357
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract The dynamics of valence excitations of rare gas solids were studied with time–and spectrally resolved luminescence experiments. From the decay curves of the free–exciton luminescence in solid X e , information concerning exciton transport and electron–hole recombination was deduced. The peculiar role of excitons stimulating the luminescence of surface centers and of desorption phenomena was analysed in a simple model system (Kr doped solid Ar). From a time–resolved analysis of the luminescence of $$Kr_2^* $$ surface centers, thermally activated lateral diffusion of Kr* metastables on the surface of the Ar host was established.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1022261803770

    Articles: DFG German National Licenses