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  • 35.10.Bg  (2)
  • 35.10.F  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Ground-state properties of neutron-deficient platinum isotopes (1992)
    Springer
    The European physical journal 342 (1992), S. 1-15 
    Details
    ISSN: 1434-601X
    Keywords: 21.10 ; 21.60 ; 27.70 ; 27.80 ; 35.10.F
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine structure splitting and the isotope shift in the λ=266 nm transition of Pt isotopes within the mass range 183 ≦A≦ 198 have been determined by Resonance Ionization Mass Spectroscopy (RIMS) in combination with Pulsed-Laser Induced Desorption (PLID). The Pt isotopes were obtained at the on-line isotope separator ISOLDE-3/CERN as daugthers of the primarily produced Hg isotopes. Magnetic moments, quadrupole moments, and changes in the mean-square charge radii are deduced and compared with results of a particle-triaxial rotor model and mean field calculations. Good agreement with experimental data (including nuclear level schemes and transition probabilities) can only be obtained if triaxial shape is admitted. The calculations yield a smooth transition in the shape of odd-A Pt nuclei from a slightly deformed, nearly oblate195Pt via triaxial197-187Pt to a strongly deformed nearly prolate177Pt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294481
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Quadrupole moments of radium isotopes from the 7p 2 P 3/2 hyperfine structure in Ra II (1988)
    Springer
    The European physical journal 11 (1988), S. 105-111 
    Details
    ISSN: 1434-6079
    Keywords: 31.30.G ; 31.30.J ; 35.10.F ; 42.65.C
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hyperfine structure and isotope shift of221–226Ra and212,214Ra have been measured in the ionic (Ra II) transition 7s 2 S 1/2–7p 2 P 3/2 (λ=381.4 nm). The method of on-line collinear fast-beam laser spectroscopy has been applied using frequency-doubling of cw dye laser radiation in an external ring cavity. The magnetic hyperfine fields are compared with semi-empirical and ab initio calculations. The analysis of the quadrupole splitting by the same method yields the following, improved values of spectroscopic quadrupole moments:Q s (221Ra)=1.978(7)b,Q s (223Ra)=1.254(3)b and the reanalyzed valuesQ s (209Ra)=0.40(2)b,Q s (211Ra)=0.48(2)b,Q s (227Ra)=1.58(3)b,Q s (229Ra)=3.09(4)b with an additional scaling uncertainty of ±5%. Furthermore, theJ-dependence of the isotope shift is analyzed in both Ra II transitions connecting the 7s 2 S 1/2 ground state with the first excited doublet 7p 2 P 1/2 and 7p 2 P 3/2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01444425
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cluster isobars for high-precision mass spectrometry (1991)
    Springer
    The European physical journal 20 (1991), S. 441-443 
    Details
    ISSN: 1434-6079
    Keywords: 07.75. + h ; 35.10.Bg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Doublet mass measurements of the isobars28Si3 and12C7 are performed by use of a Penning trap mass spectrometer and the Fourier transform ion cyclotron resonance (FT-ICR). The carbon and silicon cluster ions are produced by laser ablation. Results of these preliminary measurements are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01544032
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A Penning trap for studying cluster ions (1986)
    Springer
    The European physical journal 3 (1986), S. 189-194 
    Details
    ISSN: 1434-6079
    Keywords: 36.40 +d ; 35.10.Bg ; 29.20. −c
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We propose to use a Penning trap for spectroscopy of stored cluster ions. A similar device has been built for the purpose of mass measurements of short-lived nuclei produced at the on-line isotope separator ISOLDE/CERN. A resolving power of 500,000 in a mass measurement of39K and an accuracy of 2 × 10−7 for the85Rb/39K mass ratio were obtained. An efficiency for in-flight capture as high as 70% was achieved. The method provides very high sensitivity since typically only 10 to 100 ions are stored in the trap. We intend to perform laser spectroscopy on trapped Na clusters as a first application of the trap technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01384806
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    Paper (German National Licenses)
    Fulltext
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