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  • 1
    Electronic Resource
    Electronic Resource
    Hyperfine structure of the 33 P state of3He and isotope shift for the 23 S-33 P 0 transition (1995)
    Springer
    The European physical journal 32 (1995), S. 285-293 
    Details
    ISSN: 1434-6079
    Keywords: 32.30.Jc ; 31.30.Gs ; 35.10.Fk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine structure of the3He 1s 3p 3 P state and the3He-4He isotope shift is determined by high precision measurements of the 1s2s 3 S 1-1s 3p 3 p 3 P J transition frequencies near 389 nm. A direct frequency measurement is made without the need for wavelength calibration by tuning a single laser to the atomic frequency, and using a novel heterodyne method to observe beat frequencies with a stable reference laser. A fit to a theoretical model of hyperfine structure is used to determine the hyperfine shifts. Additional off-diagonal mixing effects are investigated to resolve a possible systematic discrepancy in the hyperfine intervals. The final isotope shift without hyperfine structure of 42184308±165 kHz is used to deduce an rms nuclear charge radius for3He of 1.956±0.042 fm. This is in good agreement with other values obtained from atomic isotope shift measurements, and a recent theoretical value of 1.958±0.006 fm. The present result helps to resolve substantial differences in the3He nuclear radius derived from electron-nuclear scattering measurements, and it provides a significant test of the nuclear three-body problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01437272
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  • 2
    Electronic Resource
    Electronic Resource
    Hyperfine structure and isotope shift of the 3s-3p transitions of atomic oxygen (1993)
    Springer
    The European physical journal 25 (1993), S. 191-199 
    Details
    ISSN: 1434-6079
    Keywords: 32.30.Jc ; 35.10.Bg ; 35.10.Fk
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using high-resolution saturation spectroscopy, by means of both double heterostructure and multiple quantum-well AlGaAs diode lasers, we investigate the isotope shifts and the hyperfine structure in the 3s-3p transitions of the triplet and quintet systems of atomic oxygen. From the analysis of the signals from17O we can deduce precise values for the hyperfine structure magnetic dipole constants. A theoretical analysis allows us to bring into evidence core polarization effects in the hyperfine structure. By heterodyning two frequency locked lasers, we perform a direct frequency measurement of the isotope effect on the3 S 1→3 P 1,2,0 transitions. From the comparison with similar accuracy data on the corresponding quintet transitions, an upper bound to the size of the nuclear volume effect is given, and precise values for the specific mass contributions are consequently obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426879
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