| 1. |
- Fredriksson, K, et al.
(författare)
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Measurement of the fine-structure splitting of the 4^(2)D state of lithium using level-crossing spectroscopy
- 1977
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 283:3, s. 227-230
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Tidskriftsartikel (refereegranskat)abstract
- The fine-structure splitting of the 42D state in lithium was measured using stepwise laser excitation combined with level-crossing spectroscopy. The splitting was determined to be 456.2(0.8) MHz, a considerably higher value than the one obtained in a recent level-anticrossing measurement. The new value is in good agreement with the result of a Hartree-Fock calculation, 460.2 MHz.
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| 2. |
- Fredriksson, K, et al.
(författare)
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Stark interaction for excited states in alkali atoms, investigated by laser spectroscopy
- 1977
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 281:3, s. 189-197
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Tidskriftsartikel (refereegranskat)abstract
- The scalar polarizability constanta0 for excitedS- andD-states in rubidium and cesium was measured utilizing a two-step excitation scheme. An rf lamp and a single-mode dye laser were used to excite the atoms in a collimated atomic beam. Values ofa0 were determined for the 9–102S1/2 and 7–82D3/2 states of rubidium and for the 10–132S1/2, 9–102D3/2 and 9–112D5/2 states of cesium. Further, the isotope shift was evaluated in the 5579 Å rubidium line. A review of experimental polarizability constants for rubidium and cesium is given, and the results are compared with theoretical values.
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| 3. |
- Grundevik, P, et al.
(författare)
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High resolution laser fluorescence spectroscopy in the deep blue spectral region
- 1977
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 283:2, s. 127-132
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Tidskriftsartikel (refereegranskat)abstract
- High-resolution laser spectroscopy measurements have been performed in the wavelength region around 4000 Å using a pulsed dye laser acting on a collimated atomic beam. Extra-cavity Fabry-Pérot filtering was used to achieve a narrow line-width of the laser light. Isotope shifts were measured in the 4216 Å and 4202 Å rubidium lines with the result ?s(87, 85)=124.3(4)MHz, and?s(87, 85) = 124.2(7)MHz, respectively, and in the 3988 Å ytterbium line with the resultds(176, 174)=-509(4)MHz, ?s(174, 172)=-530(4) MHz.
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| 4. |
- Gustavsson, M, et al.
(författare)
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An efficient method for measuring atomic and molecular lifetimes using a modulated or deflected CW dye laser beam
- 1977
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Ingår i: Physics Letters. Section A: General, Atomic and Solid State Physics. - : Elsevier BV. - 0375-9601. ; 64:3, s. 289-291
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Tidskriftsartikel (refereegranskat)abstract
- By pulse modulating or deflecting a CW dye laser beam, cascade-free lifetime determinations at high spectral resolution can be performed with the decayed-coincidence technique using measuring times of about 1 minute. The method is illustrated by lifetime measurements for the 72P3/21/2 levels of cesium.
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| 5. |
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| 6. |
- Lundberg, Hans, et al.
(författare)
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Hyperfine structure in the sequence of sodium S states
- 1977
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Ingår i: Journal of Physics B: Atomic and Molecular Physics. - : IOP Publishing. - 0022-3700. ; 10:10, s. 1971-1978
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Tidskriftsartikel (refereegranskat)abstract
- The hyperfine structure for the 6, 7 and 8 2 S 1/2 states of 23 Na was measured by optical double-resonance techniques. The states were populated by step-wise excitation using two CW dye lasers. For the dipole interaction constant a, a(6 2 S 1/2 ) = 37.5(2) MHz, a(7 2 S 1/2 )=20.9(1) MHz, a(8 2 S 1/2 )=12.85(10) MHz. were obtained. Theoretical calculations of the hyperfine structure were performed for the 3-8 2 S 1/2 states using many-body perturbation techniques. When polarization as well as certain correlation effects are included in the calculation, an agreement with the experimental values within 2% is obtained.
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| 7. |
- Svanberg, Sune
(författare)
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Laserspektroskopi
- 1977
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Ingår i: Kosmos. - 0368-6213. ; 54, s. 73-85
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Tidskriftsartikel (populärvet., debatt m.m.)
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