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  • 1
    Electronic Resource
    Electronic Resource
    Photoelectron dynamics of the valence shells of benzene as a function of photon energy (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 6918-6926 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Angle-resolved photoelectron spectroscopy was carried out on the first nine valence orbitals of benzene using synchrotron radiation as a photon source. From these data cross sections σ and angular distribution parameters β were obtained over a photon energy of 10 to 34 eV. The experimental results are compared with calculations for the same parameters, based on the multiple scattering Xα method. Considering the complexity of the molecule, the comparison is gratifying. A number of shape resonances, which are predicted, have been identified experimentally. The orbital assignments for the photoelectron spectrum of benzene have been reexamined in view of the cross sections and angular distributions and have for the most part been verified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452391
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Autoionization between the ionization thresholds for the 2Π3/2 and 2Π1/2 states of HI+ (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 4755-4759 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Angle-resolved photoelectron spectroscopy was carried out on hydrogen iodide using synchrotron radiation. Applying the constant ionic state (CIS) method, studies were made on resonances associated with autoionization between the ionization potential for the two spin-orbit split lone pair orbitals, π3/2 and π1/2. Data on both partial cross sections and angular distribution parameters, β, were obtained for the production of the first ionic state 2Π3/2 (v=0). These data indicate the presence of several series of Rydberg states leading to the second ionization potential 2Π1/2 (v=0). Both broad and sharp resonances were observed. A detailed comparison of the data is made with a MQDT calculation in the range of 10.6 to 10.73 eV. Although theory predicts some of the features correctly, there is much room for improvement. Results on the first excited vibrational state [2Π3/2 (v=1)] are also presented and the effects of vibrational states are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449959
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Autoionization in N2O as measured by angle-resolved photoelectron spectroscopy (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 83 (1985), S. 3738-3743 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Angle-resolved photoelectron spectroscopy has been carried out on N2O as a function of photon energy from 13.5 to 20.5 eV using monochromatized synchrotron radiation. The purpose of these studies has been to investigate autoionization, and most of the data have been collected under conditions of constant ionic state. Six resonances are discussed in detail: the first four that form a portion of several Rydberg series leading to the A 2Σ+ ionic state and the first two window resonances leading to the C 2Σ+ state. Data have been taken as a function of the final state vibrational band and as a function of angle between the ejected photoelectron and polarization vector. In particular, the correlation between the integrated angular intensity and its angular distribution parameter, β, has been measured as a function of photon energy over the resonances. The nature of these results and importance to the understanding of autoionization in molecules is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.449135
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Shape resonances in the angle-resolved photoelectron spectroscopy of the Si 2p shell of SiCl4 (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 122-126 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The partial cross sections and angular distribution parameters, β, have been determined for the 2p subshell in SiCl4. These data were obtained with angle-resolved photoelectron spectroscopy and the use of synchrotron radiation for a range of photon energies from 114 to 150 eV. The same quantities were calculated by use of a multiple scattering Xα method, and the agreement between experiment and theory is very good. In particular, the behavior of shape resonances was well predicted. The nature of shape resonances as a function of molecular orbitals in SiCl4 is discussed, and the importance of such intercomparison is emphasized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.450186
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Angle-resolved photoelectron spectroscopy of the valence orbitals of SiCl4 as a function of photon energy from 14 to 80 eV (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 84 (1986), S. 641-648 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Angle-resolved photoelectron spectroscopy coupled with synchrotron radiation have been used to measure partial cross sections and angular distribution parameters, β, from a photon energy of 14 to 80 eV for SiCl4. Parallel to these measurements, calculations have been made using the continuum multiple scattering Xα method. The results have been examined, primarily in terms of the phenomena of the Cooper minimum and shape resonances. Minima in both the cross sections and β values were found for each of the first five orbitals of SiCl4: 2t1, 8t2, 2e, 7t2, and 7a1. These minima were examined for their energy positions and, in the case of the β values, the depth of the minimum. Shape resonances were calculated in the photoionization of each of the orbitals, and a number of experimental features due to shape resonances are identified. The results, both experimental and theoretical, are compared with earlier work on CC14.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.450557
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    Paper (German National Licenses)
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