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  • 1
    Electronic Resource
    Electronic Resource
    Metastable states of negative carbon clusters: Cn−, n=2–6 (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 4662-4667 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Time-dependent photodetachment spectra for small electronically and vibrationally excited negatively charged carbon clusters Cn− (n=2–6) are measured using an electrostatic ion trap. The time dependence demonstrates the presence of metastable electronic states with lifetimes in the range of 10 to 200 ms. Comparison is made with available data and theoretical calculations. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1286978
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  • 2
    Electronic Resource
    Electronic Resource
    Fast beam photofragment apparatus for studies of electronic and nuclear dynamics (1999)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 3289-3298 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new fast beam photofragment apparatus for studies of electronic and nuclear dynamics is described. The experimental setup involves a chopped ion beam crossed at 90° by a pulsed laser beam. Photofragments are extracted parallel to the ion beam direction and imaged on a multisphere plate (MSP) detector. The time of flight of a photofragment from the interaction point to the MSP detector is determined by a coincidence technique. The setup allows determination of the photofragment energy and the direction of emission for each event of photofragmentation. In photoelectron spectrometry the energy resolution is tunable down to the meV region. For testing, the apparatus has been applied to photodetachment of Li−(1S) at 1064 nm. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149906
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  • 3
    Electronic Resource
    Electronic Resource
    Experimental investigation of radiative lifetimes of vibrational levels at the electronic ground state of C2− (1998)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 109 (1998), S. 5849-5855 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Radiative lifetimes of the vibrational levels v=2 to v=4 of the X 2Σg+ ground state of the C2− molecular ion have been experimentally investigated by photodetachment in a storage ring. The lifetime of the v=3 level was 0.32±0.02 s for 12C12C−, and 0.22±0.02 s for 12C13C−. For both ions, the lower limit for the v=2 lifetime was 5 s, and the upper limit for the v=4 level was ∼100 ms. The measured lifetime for v=3 of 12C12C− is a factor of 4 smaller than found in a calculation [P. Rosmus and H. Werner, J. Chem. Phys. 80, 5085 (1984)]. The results point to the existence of at least one bound vibrational level of the lowest 4Σu+ state. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.477207
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