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  • 31.60.+b  (1)
  • 32.70.Cs  (1)
  • 95.30.Ky  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Narrow-band extreme-ultraviolet laser radiation tunable in the range 90.5–95 nm (1993)
    Springer
    Applied physics 57 (1993), S. 411-416 
    Details
    ISSN: 1432-0649
    Keywords: 42.65.Ky ; 33.20.Ni ; 95.30.Ky
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Tunable, narrowband extreme ultraviolet radiation in the range 90.5–95 nm with only limited intensity variations is produced by frequency-tripling ultraviolet light from a frequency-doubled dye laser in a gas-jet of xenon. Acetylene gas is found to be an efficient medium for third-harmonic generation in this wavelength range as well. The extreme-ultraviolet radiation is applied in a spectroscopic study of the b 1 II u , v=6−8 and v=10−12, o 1 II u , v=0 and b′1Σ u + , v=9 states of molecular nitrogen. From linewidth measurements a value k p=6×1010 s−1 for the predissociation rate of the b 1 II u , v=11 state is deduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00357384
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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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