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	References of "Quinet, Pascal" in Showing results 81 to 100 of 129 1 2 3 4 5 6 7 Time-resolved laser spectroscopy of multiply ionized atoms: Natural radiative lifetimes in CeIV Zhang, Z. G.; Svanberg, S.; Quinet, Pascal et al in Physical Review Letters (2001), 87(27), Radiative lifetimes have been measured for two excited levels of Ce IV using the time-resolved laser-induced fluorescence technique. Ce3+ ions were produced in a laser-induced plasma. In the measurements ... [more ▼] Radiative lifetimes have been measured for two excited levels of Ce IV using the time-resolved laser-induced fluorescence technique. Ce3+ ions were produced in a laser-induced plasma. In the measurements, a suitable magnetic field was applied to reduce the recombination between electrons and the ions and thus the background light from the recombination, and special care was exercised to avoid flight-out-of-view effects on the lifetime measurements for the high-velocity ions. The experimental lifetime results, tau = 30(2) ns for the level 49 737 cm(-1) and tau = 30(3) ns for the level 52 226 cm(-1), were compared with relativistic Hartree-Fock calculations (tau = 30.5 and 30.0 ns) indicating a particularly excellent agreement. [less ▲] Detailed reference viewed: 11 (0 ULg) Measurement of radiative lifetimes and determination of transition probabilities of astrophysical interest in HoIII Biémont, Emile ; Palmeri, P.; Quinet, Pascal et al in Monthly Notices of the Royal Astronomical Society (2001), 328(4), 1085-1090 Lifetimes of six levels belonging to the 4f(10)6p configuration of Ho III have been measured for the first time using the time-resolved laser-induced fluorescence method. They are compared with ... [more ▼] Lifetimes of six levels belonging to the 4f(10)6p configuration of Ho III have been measured for the first time using the time-resolved laser-induced fluorescence method. They are compared with multiconfigurational pseudo-relativistic Hartree-Fock calculations. A very good agreement is found. Using the experimental lifetimes and theoretical branching fractions, a first set of transition probabilities of astrophysical interest has been obtained for this ion. [less ▲] Detailed reference viewed: 5 (0 ULg) Extended analysis of the spectrum of triply-ionozed Ytterbium (Yb IV) and transition probabilities Wyart, J.-F.; Tchang-Brillet, W. U. L.; Spector, N. et al in Physica Scripta (2001), 63 Detailed reference viewed: 6 (0 ULg) Radiative lifetime measurements in Tm III with time-resolved laser spectroscopy and comparisons with HFR calculations Li, Z. S.; Zhang, Z. G.; Lokhnygin, V. et al in Journal of Physics : B Atomic Molecular & Optical Physics (2001), 34 Natural radiative lifetimes of eight levels in Tm III were measured with the time-resolved laser-induced fluorescence (LIF) technique. Free doubly ionized thulium ions were obtained in a laser-produced ... [more ▼] Natural radiative lifetimes of eight levels in Tm III were measured with the time-resolved laser-induced fluorescence (LIF) technique. Free doubly ionized thulium ions were obtained in a laser-produced plasma. Three even-parity levels were excited from the ground state with one-photon excitation, using a laser system generating pulses of 1 ns duration. Five odd-parity levels were excited from the ground state with two-photon excitation, where a picosecond laser system was employed. In both cases, the lifetimes were evaluated from transient LIF signals detected with a fast-detection system. The experimental lifetime results were compared with Hartree–Fock calculations including relativistic corrections. Good agreement was achieved for the 4f126p levels while larger discrepancies are noted for some 4f125d levels. [less ▲] Detailed reference viewed: 23 (1 ULg) Radiative lifetime measurements and transition probabilities of astrophysical interest in Er III Biémont, Emile ; Garnir, Henri-Pierre ; Bastin, Thierry et al in Monthly Notices of the Royal Astronomical Society (2001), 321 Radiative lifetimes of seven excited states of Er III have been measured using time-resolved laser-induced fluorescence following two-photon excitation. Relativistic Hartree-Fock calculations taking core ... [more ▼] Radiative lifetimes of seven excited states of Er III have been measured using time-resolved laser-induced fluorescence following two-photon excitation. Relativistic Hartree-Fock calculations taking core-polarization effects into account are found to be in excellent agreement with the experimental results. A large set of new calculated transition probabilities is presented for many transitions of astrophysical interest. These results will be useful for investigating the composition of chemically peculiar stars. [less ▲] Detailed reference viewed: 11 (3 ULg) Experimental and Theoretical Energy Levels, Transition probabilities and Radiative Lifetimes in Yb III Biémont, Emile ; Garnir, Henri-Pierre ; Li, Z. S. et al in Journal of Physics : B Atomic Molecular & Optical Physics (2001), 34 Detailed reference viewed: 11 (1 ULg) Atomic transition probabilities in Bi II Palmeri, P.; Quinet, Pascal ; Biémont, Emile in Physica Scripta (2001), 63 Detailed reference viewed: 3 (1 ULg) Experimental and theoretical lifetimes in Yb III Zhang, Z. G.; Li, Z. S.; Svanberg, S. et al in European Physical Journal D -- Atoms, Molecules, Clusters & Optical Physics (2001), 15 Detailed reference viewed: 2 (0 ULg) Core-polarization effects and radiative lifetime measurements in Pr III Biémont, Emile ; Garnir, Henri-Pierre ; Palmeri, P. et al in Physical Review. A (2001), 64 Detailed reference viewed: 10 (0 ULg) Natural radiative lifetimes in Ce II Zhang, Z. G.; Svanberg, S.; Jiang, Z. et al in Physica Scripta (2001), 63 Detailed reference viewed: 6 (0 ULg) Experimental and theoretical radiative lifetimes, branching fractions, and oscillator strengths for Lu I and experimental lifetimes for Lu II and Lu III Fedchak, J. A.; Den Hartog, E. A.; Lawler, J. E. et al in Astrophysical Journal (2000), 542 Detailed reference viewed: 2 (1 ULg) Core-polarization effects in the Cadmium Isoelectronic Sequence Biémont, Emile ; Froese Fischer, C.; Godefroid, M. R. et al in Physical Review. A (2000), 62 Detailed reference viewed: 5 (1 ULg) Lifetime measurements in rare-earth ions by time-resolved laser spectroscopy Garnir, Henri-Pierre ; Biémont, Emile ; Bastin, Thierry et al Conference (2000) Detailed reference viewed: 11 (2 ULg) Lifetime measurements in singly and doubly ionized lanthanides by laser induced fluorescence Biémont, Emile ; Garnir, Henri-Pierre ; Bastin, Thierry et al Poster (2000) Detailed reference viewed: 5 (3 ULg) Lifetime measurements in singly and doubly ionized rare earths by time-resolved laser spectroscopy Biémont, Emile ; Garnir, Henri-Pierre ; Bastin, Thierry et al Poster (2000) Detailed reference viewed: 4 (2 ULg) Theoretical Lifetimes and Oscillator Strengths in Ce II. Application to the Chemical Composition of the Sun Palmeri, P.; Quinet, Pascal ; Wyart, J. F. et al in Physica Scripta (2000), 61 Detailed reference viewed: 5 (1 ULg) Core-polarization effects in Cu II Biémont, Emile ; Pinnington, E. H.; Quinet, Pascal et al in Physica Scripta (2000), 61 Detailed reference viewed: 8 (1 ULg) Dielectronic structure of 2l-1s Transitions of Multicharged Ions of Argon with nuclear charges Z = 10 - 17 Biémont, Emile ; Quinet, Pascal ; Faenov, A.Ya et al in Physica Scripta (2000), 61 Detailed reference viewed: 5 (1 ULg) Theoretical Oscillator Strengths in Pr III and application to some CP stars Palmeri, P.; Quinet, Pascal ; Frémat, Y. et al in Astrophysical Journal. Supplement Series (2000), 129 Detailed reference viewed: 4 (1 ULg) A new database of astrophysical interest Biémont, Emile ; Palmeri, P.; Quinet, Pascal in Astrophysics & Space Science (1999), 269-270 Detailed reference viewed: 2 (0 ULg) 1 2 3 4 5 6 7

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