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    Wyświetlanie 1-9 z 9
    Tytuł:
    Non-Adiabatic Semiclassical Calculations of the Collision-Time Asymmetry of the $\text{}^{114}$Cd 326.1 nm Line Perturbed by Noble Gases
    Autorzy:
    Bielski, A.
    Ciuryło, R.
    Lisak, D.
    Trawiński, R. S.
    Orlikowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2037132.pdf
    Data publikacji:
    2004-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    33.70.-w
    34.20.-b
    Opis:
    The collision-time asymmetry coefficients as well as the pressure broadening and shifting rates of the $\text{}^{114}$Cd 326.1 nm line perturbed by noble gases are calculated in the framework of the non-adiabatic semi-classical method using the Czuchaj et al. potentials. The theoretical values are compared with experimental results determined recently by means of laser-induced fluorescence technique.
    Źródło:
    Acta Physica Polonica A; 2004, 105, 3; 217-232
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Observation of the Line-Mixing and Collision-Time Asymmetry of the 5$\text{}^{1}$S$\text{}_{0}$-5$\text{}^{3}$P$\text{}_{1}$ Line of the Even-Odd $\text{}^{113}$Cd Isotope
    Autorzy:
    Bielski, A.
    Ciuryło, R.
    Domysławska, J.
    Lisak, D.
    Masłowski, P.
    Szudy, J.
    Trawiński, R. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2037251.pdf
    Data publikacji:
    2004-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    33.70.-w
    34.20.-b
    Opis:
    The profiles of argon perturbed components of the 5$\text{}^{1}$S$\text{}_{0}$-5$\text{}^{3}$P$\text{}_{1}$ line of the even-odd $\text{}^{113}$Cd isotope were measured using a laser-induced fluorescence method. It was shown that the asymmetries of the profiles are due to both the collision-duration and line-mixing effects.
    Źródło:
    Acta Physica Polonica A; 2004, 105, 4; 329-338
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Long-range Interactions for the A$\text{}^{3}$1$\text{}_{u}$ and B$\text{}^{3}$0$\text{}_{u}^{+}$ States of Cd$\text{}_{2}$ from Line Shape Measurements
    Autorzy:
    Grycuk, T.
    Michalicka, M.
    Rogaczewski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2030719.pdf
    Data publikacji:
    2002-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    33.70.-w
    34.20.-b
    32.70.-n
    Opis:
    We report on very precise measurements of the absorption profile of the 326.1 nm resonance line of cadmium broadened by interactions with the ground state Cd atoms under thermal equilibrium. The experimental red wing profiles, corrected for the Boltzmann factor at different temperatures, are analysed in terms of the long-range potential parameters including dispersion and resonant interactions. The resonant interaction energy constant C$\text{}_{3}$ is calculated to be 2.31×10$\text{}^{-2}$ eV Å$\text{}^{3}$ and the van der Waals constant C$\text{}_{6}$ for difference potentials between the ground state X$\text{}^{1}$0$\text{}_{ }^{+}$g and the excited states B$\text{}^{3}$0$\text{}_{u}^{+}$ and A$\text{}^{3}$1$\text{}_{u}$ of Cd$\text{}_{2}$ derived experimentally are found to be (182.6± 8) eV Å$\text{}^{6}$ and (289±4) eV Å$\text{}^{6}$, respectively. The former is determined for the first time and the latter is considerably corrected in comparison to earlier determination. The van der Waals constant C$\text{}_{6}$ for the ground state of Cd$\text{}_{2}$ is discussed and estimated to be C$\text{}_{6}^{g}$=(247± 40) eV Å$\text{}^{6}$.
    Źródło:
    Acta Physica Polonica A; 2002, 101, 6; 825-836
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Speed-Dependent Effects on the 748.8 nm Ne Self-Broadened Line
    Autorzy:
    Ciuryło, R.
    Bielski, A.
    Brym, S.
    Domysławska, J.
    Lisak, D.
    Szudy, J.
    Trawiński, R. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2011059.pdf
    Data publikacji:
    1999-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    33.70.-w
    34.20.-b
    Opis:
    Profiles of the self-broadened 748.8 nm Ne line emitted from a glow discharge in neon in the pressure range between 0.8 and 100 Tr were measured using an improved experimental setup with pressure-scanned Fabry-Perot interferometer. First, line profiles were analysed using an ordinary Voigt procedure which yielded the Doppler widths decreasing with the increase in neon pressure. Using a speed-dependent Voigt profile it was shown that for the 748.8 nm line the correlation between the Doppler and collisional broadening plays an important role. However, the values of the pressure broadening and shift coefficients determined by the speed-dependent Voigt analysis were found to be only slightly different from those obtained by the ordinary Voigt analysis. A systematic error in the determination of perturber concentration in our previous investigation was corrected.
    Źródło:
    Acta Physica Polonica A; 1999, 96, 3-4; 359-372
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Excitation Processes on the Shape of Argon and Neon Lines
    Autorzy:
    Bielski, A.
    Ciuryło, R.
    Lisak, D.
    Trawiński, R. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2012938.pdf
    Data publikacji:
    2000-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    33.70.-w
    34.20.-b
    Opis:
    Shapes of self-broadened argon lines 687.1 nm (4d$\text{}_{5}$-2p$\text{}_{10}$), 703.0 nm (3s$\text{}_{5}$-2p$\text{}_{9}$), 750.3 nm (2p$\text{}_{1}$-1s$\text{}_{2}$) as well as the neon line 748.8 nm (3d$\text{}_{3}$-2p$\text{}_{10}$) emitted from glow discharges at low pressures were analysed using a Fabry Perot interferometer. We showed that the dissociative recombination of Ar$\text{}_{2}^{+}$ (or Ne$\text{}_{2}^{+}$) molecular ions which gives rise to the density of non-thermalized atoms, may be regarded as the main process responsible for the distortion of the profiles of the above lines. The distorted profiles were analysed as superposition of the Ballik profile for thermalized atoms and the modified Ballik profile for non-thermalized atoms. The Lorentzian and Gaussian widths as well as relative densities of non-thermalized and thermalized atoms were determined.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 2; 275-284
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure Broadening and Shift of the 326.1 nm Cd Line Perturbed by H$\text{}_{2}$ and D$\text{}_{2}$
    Autorzy:
    Bielski, A.
    Ciuryło, R.
    Domysławska, J.
    Lisak, D.
    Trawiński, R. S.
    Wolnikowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2014011.pdf
    Data publikacji:
    2000-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    33.70.-w
    34.20.-b
    Opis:
    The experimental values of pressure broadening and shift coefficients of the $\text{}^{114}$Cd 326.1 nm line perturbed by H$\text{}_{2}$ and D$\text{}_{2}$ are determined using a LIF technique and compared with theoretical values calculated from the impact theory.
    Źródło:
    Acta Physica Polonica A; 2000, 97, 6; 1003-1010
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Collision-Time Asymmetry and Speed-Dependent Effects on the $\text{}^{114}$Cd 326.1 nm Line Perturbed by Kr
    Autorzy:
    Trawiński, R. S.
    Bielski, A.
    Lisak, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2024018.pdf
    Data publikacji:
    2001-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    33.70.-w
    34.20.-b
    Opis:
    Using a laser-induced fluorescence method, detailed analysis of profiles of the $\text{}^{114}$Cd 326.1 nm line perturbed by krypton was performed which revealed departures from the ordinary Voigt profile. These departures are shown to be consistent with fits of experimental profiles to a speed-dependent asymmetric Voigt profile. Coefficients of the pressure broadening, shift, and collision-time asymmetry are determined and compared with those calculated in the adiabatic approximation for the van der Waals, Czuchaj-Stoll, and Morse potentials.
    Źródło:
    Acta Physica Polonica A; 2001, 99, 2; 243-256
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Low-Polarizability Perturbers on the Cadmium Intercombination Line
    Autorzy:
    Bielski, A.
    Lisak, D.
    Trawiński, R. S.
    Szudy, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2035653.pdf
    Data publikacji:
    2003-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    33.70.-w
    34.20.-b
    Opis:
    Using a laser-induced fluorescence method a detailed analysis of profiles of the $\text{}^{114}$Cd 326.1 nm line perturbed by neon and helium was performed which revealed deviations from the ordinary Voigt profile. These deviations are shown to be consistent with fits of experimental profiles to an asymmetric Voigt profile. Coefficients of the pressure broadening, shift and collision-time asymmetry are determined and compared with those calculated in the adiabatic approximation for different interaction potentials.
    Źródło:
    Acta Physica Polonica A; 2003, 103, 1; 23-40
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Long-Range Interactions and the Oscillator Strength for the $\text{}^{1}1_{u}, \text{}^{1}0_{u}^{+}$ ← X $\text{}^{1}0_{g}^{+}$ Transitions in Zn$\text{}_{2}$
    Autorzy:
    Kubkowska, M. K.
    Szczęśniak, T. M.
    Grycuk, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2037211.pdf
    Data publikacji:
    2004-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    32.70.-n
    32.70.Cs
    32.70.Jz
    33.70.-w
    34.20.-b
    Opis:
    The interaction potentials for Zn$\text{}_{2}$ electronic states $\text{}^{1}1\text{}_{u}$ and $\text{}^{1}0_{u}^{+}$ correlated with (4 $\text{}^{1}P_{1}$+4 $\text{}^{1}S_{0}$) asymptote in the long-range region (10-25) Å and the oscillator strength f for the absorption transition to these states are derived experimentally from a careful analysis of the self-broadened resonance 213.8 nm line of Zn. It is found that although the interatomic interactions at so long distances are dominated by resonance potential of the form C$\text{}_{3}$/R$\text{}^{3}$ resulting in the Lorentzian line shape, the parameter C$\text{}_{3}$ and thus f value significantly decrease with R decreasing. This effect proved to be a linear function of R$\text{}^{-1}$ yielding the oscillator strength for the considered line f$\text{}_{0}$=1.456 $\pm$ 0.010 from $R \rightarrow \infty$ extrapolation. This value seems to be the most accurate experimental result as yet and shows that the best theoretical values for this quantity are overestimated. It is suggested that the long-range behaviour of the potential energy curves observed here for the first time represents the effective potentials including dominating resonance interactions and a possible slight contribution of the dispersion interactions as well as the R-dependent spin-orbit interaction.
    Źródło:
    Acta Physica Polonica A; 2004, 105, 4; 317-328
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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