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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 25 (1993), S. 185-189 
    ISSN: 1434-6079
    Keywords: 32.30.Jc ; 35.10.Bg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The isotope shift and hyperfine structure in a rhenium hollow cathode discharge was studied for transitions of the type 5d 56s7s → 5d 56s6p and 5d 56s6d → 5d 56s6p through Doppler-free saturation absorption laserspectroscopy and high resolution interferometry. Taking configuration mixing in the lower levels of 5d 56s6p under consideration, we obtain average configuration isotope shift values for 5d 56s7s of −1760(100) MHz and for 5d 56s6d of −1970(200) MHz. These experimental values compare extremely well with the theoretically predicted configuration isotope shifts in rhenium, based on pseudo-relativistic Hartree-Fock calculations, of −1710 MHz and −1940 MHz, resp. In addition hyperfine structure constants for rhenium levels of 5d 56s6d are reported here for the first time.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 13 (1989), S. 181-192 
    ISSN: 1434-6079
    Keywords: 31.30.Gs ; 32.30.Jc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The fine structure (fs) and hyperfine structure (hfs) level scheme of Am I is reanalysed using a semi empirical fitting procedure which incorporates experimental data. Especially new laserspectroscopic measurements of the hfs of some electronic transitions in the Am atom enables us to make a more detailed analysis of 5f 7 7s 7p fine structure in Am I. In particular a relation is given between theB-factor values and the value of the nuclear electric quadrupole moment of241Am independent of a calibration by results of nuclear spectroscopy.
    Type of Medium: Electronic Resource
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