| 1. |
- Gaarde, Mette, et al.
(author)
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Determination of Radiative Lifetimes of Excited-states In Neutral Gold Using Time-resolved Vacuum-ultraviolet Laser Spectroscopy
- 1994
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In: Physical Review A (Atomic, Molecular and Optical Physics). - 1050-2947. ; 50:1, s. 209-213
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Journal article (peer-reviewed)abstract
- Natural radiative lifetimes of the states in the highly perturbed 5d10np 2P sequence in neutral gold, Au I, for n = 6-9, as well as of four of the perturbing 5d(9)6s6p 2P states, have been measured. This was done by direct excitation from the ground state with short-pulse vacuum-ultraviolet laser light and time-resolved detection of the laser-induced fluorescence. We found the lifetimes to be tau(6p P-2(1/2))=6.2(2) ns, tau(6p P-2(3/2))=4.7(2) ns, tau(7p P-2(1/2))=6.4(7) ns, tau(7p P-2(3/2))=5.3(7) ns, tau(8p P-2(1/2))=63(3) ns, tau(8p P-2(3/2))=24(2) ns, tau(9p P-2(1/2))=28(2) ns, and tau(9p P-2(3/2))=75(4) ns. For the perturbing states (two states of each term have been observed) we found tau(P-2(1/2), 60983.05 cm-1)=17.5(10) ns, tau(P-2(1/2), 62540.65 cm-1)=6.7(7) ns, tau(P-2(3/2), 58826.30 cm-1)=2.1(15) ns, and tau(P-2(3/2), 63005.62 cm-1)=2.7(15) ns. Furthermore, we have investigated the hyperfine structure of the 6p P-2(3/2) State.
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| 2. |
- Jiang, Z. K, et al.
(author)
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Investigation of Shifts and Interaction of Signals In High-contrast Transmission Spectroscopy
- 1991
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In: Zeitschrift für Physik D Atoms, Molecules and Clusters. - 0178-7683. ; 21:4, s. 315-322
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Journal article (peer-reviewed)abstract
- In the recently introduced high-contrast transmission version of saturated absorption laser spectroscopy, narrow signals are obtained from dense atomic samples subject to strong pumping. A study of possible systematic shifts of the signals in this domain of rather extreme experimental conditions was performed in order to assess the validity of spectroscopic data obtained with this technique. Certain signal components were found to be slightly shifted while others were not. Further, a theoretical study of the behaviour of overlapping signals in the high-contrast regime is presented. In particular, the question of whether structures buried under the natural linewidth could be resolved is addressed.
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| 3. |
- Jiang, Z. K, et al.
(author)
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Perturbations In the Np1,3p Rydberg Sequences of Neutral Yb Probed By Zeeman-effect and Lifetime Measurements
- 1991
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In: Zeitschrift für Physik D Atoms, Molecules and Clusters. - 0178-7683. ; 22:1, s. 387-389
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Journal article (peer-reviewed)abstract
- The np P Rydberg sequence of neutral Ytterbium is strongly perturbed. These perturbations were monitored by measuring the g(J) factors and lifetimes of 19 states, including both singlets and triplets as well as states from the perturbing configurations. A pulsed laser setup was used. The g(J) factors were obtained from a Zeeman quantum-beat experiment and the lifetimes by direct observation of the decay of the fluorescence light.
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| 4. |
- Jiang, Z. K, et al.
(author)
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Studies on radiative lifetimes in the 4d10ns2S and 4d10nd2D sequences of neutral silver
- 1990
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In: Zeitschrift für Physik D Atoms, Molecules and Clusters. - 0178-7683. ; 17:1, s. 1-4
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Journal article (peer-reviewed)abstract
- We have performed lifetime measurements in the sequences of2S1/2 and2D3/2 states for the alkali-like 4d10 ns,nd configurations of neutral silver. Selective stepwise excitations from the 4d10 5s2S1/2 ground state were performed using two pulsed dye lasers. Optical transients were recorded and evaluated with regard to the decay time. The lifetime results are compared with those of a theoretical study in which a model potential has been used to describe the polarisation of the 4d shell.
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| 5. |
- Zerne, R, et al.
(author)
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Determination of Radiative Lifetimes In the 3d(10)4snpp-1(1) Sequence of Neutral Zinc By Time-resolved Vuv Laser Spectroscopy
- 1994
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In: Zeitschrift für Physik D Atoms, Molecules and Clusters. - 0178-7683. ; 32:3, s. 187-189
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Journal article (peer-reviewed)abstract
- Time resolved laser spectroscopy in the VUV spectral region is applied to investigate the (n=5-8) 3d(10) 4snp P-1(1) series of neutral zinc. The natural lifetimes of this series were measured by time-resolved laser-induced fluorescence. We find tau(n=5)=11.7(9) ns, tau(n=6)=80(8) ns, tau(n=7)=179(20) ns and tau(n=8)=356 (35) ns. These results are compared with a theoretical calculation.
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