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  • 1
    Electronic Resource
    Electronic Resource
    Determination of isotope shift crossed-second-order-effects and hyperfine-structure parameters in the Eu I configuration 4f 7 6s7s (1985)
    Springer
    The European physical journal 321 (1985), S. 365-369 
    Details
    ISSN: 1434-601X
    Keywords: 32.30 ; 35.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the Eu I configuration 4f 7(8 S)6s7s the isotope shift (IS) and hyperfine-structure (hfs) of the levelse 8 S 7/2 andf 8 S 7/2 were determined from the transitions 684.5 nm, 733.7 nm and 821.0 nm to 4f 76s6p. Together with experimental results of our previous measurements a theoretical analysis of the IS and hfs for the complete configuration 4f 7 6s7s can now be carried out. From the IS of the four 6s7s-levels we evaluated the two crossed-second-order-parametersg 3(4f,6s)= −l.l(l)mK andg 3(4f, 7s)= −0.1(l)mK. The ratiog 3/G 3 is determined for various Eu configurations and found to be equal to 5.6(3)·10−6 in complete agreement with a theoretical value following from Hartree-Fock calculations. The single electron hfs splitting constantsa 10(4f)= −1.9 (3) mK,a 10(6s)=396(3)mK, anda 10(7s)=65(3)mK are also determined and compared with those of other Eu configurations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411965
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  • 2
    Electronic Resource
    Electronic Resource
    Fine structure and hyperfine structure in the excited configuration 5p 26s of the antimony I spectrum (1986)
    Springer
    The European physical journal 1 (1986), S. 151-156 
    Details
    ISSN: 1434-6079
    Keywords: 32.90 ; 32.30 ; 35.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract By optical interference and VUV spectroscopy the doublet system of SbI 5p 26s was investigated, so that now the hyperfinestructure of all 8 levels of 5p 26s (A- andB-splitting constants) are known. From the analysis we receive a spin-orbit parameter ζ5p =3,538(57) cm−1 and from the hyperfine-analysis single electron splitting constantsa 5p 01 =52.4(4.6),a 5p 10 =−1.6(7.3),a 5p 12 =72.3(2.3),a 6s 10 =91.7(4.1),b 5p 02 =−49.6(1.1) andb 5p 11 =30.4(3.2) (all values in mK). For all calculations in the fs- and hfs-analysis the 5p 26s 2 D 3/2 has to be excluded (see discussion). With the figures given above the quadrupole moment121 Q(5p 26s)=−0.44(3) barn was obtained. It is in good agreement with the121 Q(5p 3). For the core-polarization by the 5p electron in the innerfieldns-shells (n=1, 2, 3, 4, 5) and the unpaired 6s electron a field of +500(300) kG was obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01436548
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  • 3
    Electronic Resource
    Electronic Resource
    Theoretical and experimental analysis of the fine structure and hyperfine structure in the configurations 5p6s and 5p6p of the antimony II spectrum (1986)
    Springer
    The European physical journal 1 (1986), S. 157-166 
    Details
    ISSN: 1434-6079
    Keywords: 32.30 ; 32.90 ; 35.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract From 17 transitions in the singly ionized Sb II spectrum the hyperfine structure (A andB splitting constants) of the complete excited configurations 5p6s and 5p6p were determined by means of optical interference spectroscopy. In addition, a theoretical analysis both of the fine structure and also of the hyperfine structure was carried out (in the case of 5p6p of the general typenpn′p for the first time in literature). For the 3 levels 5p6p 3 P 1, 5p7p 3 D 2 and 5p6p 1 P 1 a different classification was found and consistent values for the fine structure parameters, mixing coefficients and single electron hyperfine structure splitting parametersa nl ik andb nl ik were obtained. The three new determinations in Sb II of the quadrupole moment (in barn) of121Sb (Q(5p6s)=−0.55(5);Q(5p6p)=−0.57(5) from the 5p-electron andQ(5p6p)=−0.7(2) from the 6p-electron) are well agreeing with each other but differ to former values from SbI. The core polarization and isotope shift of the lines, however, are compatible with our former results in SbI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01436549
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Hyperfinestructure-investigations in the mangan I configurations 3d 5 4s 4p and 4s 5s (1987)
    Springer
    The European physical journal 7 (1987), S. 161-164 
    Details
    ISSN: 1434-6079
    Keywords: 32.30 ; 35.10
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nine transitions (ranging from 475 till 733 nm) between the excited configuration 3d 5 4s 5s and 3d 5 4s 4p of55Mn were investigated with computer supported interference spectroscopy. Thus the hyperfine structure (hfs) of the four 4s 5s and the twelve 4s 4p levels is now completely known from experiment. The hfs results are discussed with the effective operator technique and for 4s 4p the accuracy of the one-electron parametersa ik could be improved:a 3d 10 =−6.28(24),a 4s 10 =154.0(1.4),a 4p 01 =9.3(8),a 4p 12 =7.7(2.5) in mK. For the configuration 4s 5s — for which fine structure calculations are not yet available — the experimental hfs data prove a practically pureS-character. Besides the one-electron splitting parameters deduced:a 3d 10 =−6.5(5),a 4s 10 =182(3),a 5s 10 =24(3) in mK, permit to determine the degree of mixing between the twoe 6 S 5/2 andf 6 S 5/2 levels which amounts to about 3%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01384582
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    Paper (German National Licenses)
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