| 1. |
- Fredriksson, K, et al.
(författare)
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Fine-structure measurements for highly excited F states of cesium
- 1978
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 284:4, s. 429-430
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Tidskriftsartikel (refereegranskat)abstract
- The fine-structure splittings of highly excited F-states in Cs were measured using high-resolution laser spectroscopy. The 12 and 132F states were found to be inverted with splittings ?E (122F)=-522(3) MHz and ?E (132F)=-416(3) MHz.
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| 2. |
- Fredriksson, K, et al.
(författare)
-
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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| 3. |
- 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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| 4. |
- 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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| 5. |
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| 6. |
- Lundberg, Hans, et al.
(författare)
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Determination of natural radiative lifetimes and Lande factors for highly excited F states in cesium
- 1979
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 290:2, s. 127-130
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Tidskriftsartikel (refereegranskat)abstract
- Natural radiative lifetimes and LandégJ factors for several highly excitedF states in cesium were measured using time-resolved fluorescence spectroscopy. TheF states were excited from the 52D5/2 state with a pulse-modulated CW dye laser, and the delayed-coincidence method was employed to record decay curves, which in some experiments exhibited Zeeman quantum beats. A further CW dye laser was used to produce the necessary population in the 52D5/2 state. The lifetimes in the sequence 11–162F7/2 follow anx scaling law withx=2.76 and the Landé factors agree with the predicted value, 1.143.
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| 7. |
- Nilsson, L, et al.
(författare)
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Precision determination of the fine-structure splittings of the 5d and 6d states in potassium
- 1979
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Ingår i: Zeitschrift für Physik A Hadrons and Nuclei. - 0939-7922. ; 291:4, s. 303-309
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Tidskriftsartikel (refereegranskat)abstract
- The fine-structure splittings of the inverted 5 and 62D states of potassium were measured by observing level-crossing signals at high magnetic fields. TheD levels were populated using step-wise excitations, employing two CW tunable dye lasers. For the fine-structure intervals dW we find: dW (5d)= -15,102.0 (5) MHz anddW(6d) = -7,965.8 (6) MHz. These values are about 100 times more accurate than previous results for these states. An expression is given, describing the fine-structure splittings in the sequence of potassium2D states.
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