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  • 31.20.Tz  (1)
  • 62.65.Ky  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    High-resolution laser spectroscopy on H2 at 97–98 nm (1994)
    Springer
    Applied physics 59 (1994), S. 307-310 
    Details
    ISSN: 1432-0649
    Keywords: 33.20.Ni ; 62.65.Ky
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A narrowband tunable eXtreme UltraViolet (XUV) laser source is used for a high resolution study of the Lyman (B 1 Σ u + ™X 1 Σ g + ) band system of molecular hydrogen. Seven rotational transitions of two vibrational bands, (10,0) and (11,0), in the wavelength range from 97.2–98.3 nm have been investigated for the first time under sub-Doppler molecular beam conditions. A calibration procedure using the I2 standard in the visible yielded an absolute frequency accuracy of 0.02 cm−1. The obtained H2 transition frequencies provide a calibration standard in the extreme ultraviolet wavelength region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081398
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hyperfine structure and multichannel quantum defect theory analysis of the 6sng rydberg series of barium (1988)
    Springer
    The European physical journal 8 (1988), S. 149-161 
    Details
    ISSN: 1434-6079
    Keywords: 31.60.+b ; 31.30.Gs ; 31.20.Tz ; 32.70.Cs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High resolution laser-atomic-beam spectroscopy has been applied to study the hyperfine structure of the barium 6sng Rydberg series forn=6−40. The singlet-triplet mixing of the two 6sng J=4 series is deduced through a diagonalisation of the total Hamiltonian. Multichannel Quantum Defect Theory (MQDT) has been used to reproduce both experimental level energies of the 6sng J=3,4 and 5 series and the extracted singlet-triplet mixing. The close-coupling channels of the 6sng Rydberg series turn out to be nearly purejj-coupled channels in contradistinction to lowerl Rydberg series. Furthermore MQDT is used to analyse the observed isotope shifts and peak intensities of the 6sng Rydberg series.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01384507
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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