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| 4. |
- Grafström, Peter, et al.
(författare)
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Hyperfine structure and isotope shift of highly excited barium-I states
- 1982
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 306:4, s. 281-284
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Tidskriftsartikel (refereegranskat)abstract
- High-resolution laser-spectroscopy measurements of hyperfine structure and isotope shifts were performed for the 6snd 1 D 2 sequence of Ba-I in the regionn=12–24. Stepwise laser excitations of a collimated atomic beam were used. A strong influence on the hyperfine structure is observed at the perturbation atn=14, caused by interaction with the 5d7d configuration. Whereas the isotope shift for the even isotopes stays essentially constant with increasingn, the odd isotopes exhibit a strong change, indicating hyperfine-induced shifts. Interesting discussions with Prof. E. Matthias in the final stage of this work are gratefully acknowledged. This work was supported by the Swedish Natural Science Research Council.
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| 5. |
- Grundevik, P, et al.
(författare)
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Hyperfine structure in the 6p5d configuration and isotope shifts in transitions between the 6s5d and the 6p5d configurations in Ba I
- 1982
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 306:3, s. 195-209
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Tidskriftsartikel (refereegranskat)abstract
- High-resolution laser fluorescence spectroscopy, using a single-mode dye laser acting on a collimated atomic beam, has been performed to determine the hyperfine-structure (hfs) constants in six states of the 6p 5d configuration of135Ba and137Ba. Isotope shifts (IS) for eleven transitions between the 6s 5d and the 6p 5d configurations have also been measured. From an analysis of the energy levels, intermediate angular wavefunctions have been deduced. The wavefunctions are used to evaluate experimental hyperfine parameters from the experimental hfs constants. The parameters are, for the magnetic-dipole interaction compared with theoretical values, and for the electricquadrupole interaction used to estimate the nuclear quadrupole moments for the odd isotopes.
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| 7. |
- Jonsson, G, et al.
(författare)
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Hyperfine structure and radiative lifetimes in the 3s2n p2P3/2 sequence of Al-27 using time resolved laser spectroscopy
- 1984
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 316:3, s. 259-263
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Tidskriftsartikel (refereegranskat)abstract
- Using time-resolved laser spectroscopy we have determined the hyperfine structure in the 3s2n p2P3/2 sequence of27Al (I=5/2). The magnetic-dipole interaction constants were found to scale withn*-2.85 (n* is the effective principal quantum number) in the investigated regionn=6–12. Significant quadrupole interaction constants were obtained forn=6–9. The measured radiative lifetimes forn=6–12 scale withn*2.
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