The Experts below are selected from a list of 213 Experts worldwide ranked by ideXlab platform

M J Hubin-franskin - One of the best experts on this subject based on the ideXlab platform.

  • Core Shell excitation of 2-propenal (acrolein) at the O 1s and C 1s edges: An experimental and ab initio study
    Journal of Chemical Physics, 2003
    Co-Authors: D. Duflot, J Heinesch, J.-p. Flament, I. C. Walker, M J Hubin-franskin
    Abstract:

    The carbon and oxygen K-Shell spectra of gaseous 2-propenal (acrolein) have been measured using the inner-Shell Electron energy loss spectroscopy method. Large scale ab initio configuration interaction calculations have been carried out to enable firm assignments of the observed bands. The overall shapes of the spectra are similar to previous low resolution monolayer and multilayer phases NEXAFS spectra recorded by photoabsorption of synchrotron radiation, but the spectral bands are much better resolved than the earlier ones. The spectra are dominated by excitation of π* type states and by interaction between the C=C and C=O π* orbitals.

  • Electronic excitation of gaseous pyrrole and pyrazole by inner-Shell Electron energy loss spectroscopy
    Journal of Chemical Physics, 1998
    Co-Authors: D. Duflot, C Hannay, J.-p. Flament, M J Hubin-franskin
    Abstract:

    The spectroscopy of the unoccupied molecular orbitals of gaseous pyrrole and pyrazole has been studied by Electron impact under electric dipole scattering conditions (2 KeV, small angle) and the inner-Shell Electron energy loss method. The core-excitation spectra have been recorded at the C1s and N1s edges with 0.2 eV resolution, resolution allowing to observe separately the transitions from the carbon atoms with different chemical environment. Ab initio calculations, using the equivalent core model, were performed to help in the interpretation of the spectral features. The spectra are dominated by transitions to the π* and σ* molecular orbitals. The calculations confirm that the 3b1(π*) orbital is the lowest-energy unoccupied one in pyrrole. In several cases, the intensity of the Rydberg excitations is enhanced by an important valence σ* character of the Rydberg orbitals.

  • A position-sensitive detector mounted on an inner-Shell Electron energy-loss spectrometer
    Measurement Science and Technology, 1995
    Co-Authors: C Hannay, J Heinesch, U Kleyens, M J Hubin-franskin
    Abstract:

    An inner-Shell Electron energy-loss spectrometer has been equipped with a position-sensitive multi-detector system consisting of two microchannel plate intensifiers, a phosphor screen and a charge-coupled device. This has led to a strong improvement in the data collection time which generally is fairly large for inner-Shell transitions as the excitation cross sections are much smaller than those for valence-Shell transitions. The SF6 Electron energy-loss spectrum recorded at the S 2p edge with an energy resolution of 200 meV is given as an example.

Jie Liu - One of the best experts on this subject based on the ideXlab platform.

  • Inner-Shell Electron effects in strong-field double ionization of Xe
    Physical Review A, 2016
    Co-Authors: Zongqiang Yuan, Jie Liu
    Abstract:

    We investigate theoretically the inner-Shell Electron effects in strong-field double ionization of Xe by a comparative study with two different three-dimensional semiclassical models, i.e., the widely used helium-like model and an improved Green--Sellin--Zachor (GSZ) model. The enhanced double-ionization signals through sequential ionization and recollision-induced excitation with subsequent field ionization are identified as two origins of the nonstructured pattern in the correlated Electron momentum spectrum observed in a recent experiment [Phys. Rev. Lett. 113, 103001 (2014)]. The relationship between these enhancements and the inner-Shell Electrons is revealed by back analysis of the classical trajectories.

Fu Libin - One of the best experts on this subject based on the ideXlab platform.

  • Inner-Shell Electron effects in strong-field double ionization of Xe
    PHYSICAL REVIEW A, 2016
    Co-Authors: Yuan Zongqiang, Ye Difa, Liu Jie, Fu Libin
    Abstract:

    We investigate theoretically the inner-Shell Electron effects in strong-field double ionization of Xe by a comparative study with two different three-dimensional semiclassical models, i.e., the widely used helium-like model and an improved Green-Sellin-Zachor (GSZ) model. The enhanced double-ionization signals through sequential ionization and recollision-induced excitation with subsequent field ionization are identified as two origins of the nonstructured pattern in the correlated Electron momentum spectrum observed in a recent experiment [Phys. Rev. Lett. 113, 103001 (2014)]. The relationship between these enhancements and the inner-Shell Electrons is revealed by back analysis of the classical trajectories.National Basic Research Program of China (973 Program) [2013CBA01502, 2013CB834100]; National Natural Science Foundation of China [11374040, 11274051, 11304018, 11475027]; Foundation of President of the China Academy of Engineering Physics [2014-1-029]; CAEP-FESTC [J2014-0401-03]SCI(E)EIARTICLEliu_jie@iapcm.ac.cn; lbfu@iapcm.ac.cn69

Zongqiang Yuan - One of the best experts on this subject based on the ideXlab platform.

  • Inner-Shell Electron effects in strong-field double ionization of Xe
    Physical Review A, 2016
    Co-Authors: Zongqiang Yuan, Jie Liu
    Abstract:

    We investigate theoretically the inner-Shell Electron effects in strong-field double ionization of Xe by a comparative study with two different three-dimensional semiclassical models, i.e., the widely used helium-like model and an improved Green--Sellin--Zachor (GSZ) model. The enhanced double-ionization signals through sequential ionization and recollision-induced excitation with subsequent field ionization are identified as two origins of the nonstructured pattern in the correlated Electron momentum spectrum observed in a recent experiment [Phys. Rev. Lett. 113, 103001 (2014)]. The relationship between these enhancements and the inner-Shell Electrons is revealed by back analysis of the classical trajectories.

Yuan Zongqiang - One of the best experts on this subject based on the ideXlab platform.

  • Inner-Shell Electron effects in strong-field double ionization of Xe
    PHYSICAL REVIEW A, 2016
    Co-Authors: Yuan Zongqiang, Ye Difa, Liu Jie, Fu Libin
    Abstract:

    We investigate theoretically the inner-Shell Electron effects in strong-field double ionization of Xe by a comparative study with two different three-dimensional semiclassical models, i.e., the widely used helium-like model and an improved Green-Sellin-Zachor (GSZ) model. The enhanced double-ionization signals through sequential ionization and recollision-induced excitation with subsequent field ionization are identified as two origins of the nonstructured pattern in the correlated Electron momentum spectrum observed in a recent experiment [Phys. Rev. Lett. 113, 103001 (2014)]. The relationship between these enhancements and the inner-Shell Electrons is revealed by back analysis of the classical trajectories.National Basic Research Program of China (973 Program) [2013CBA01502, 2013CB834100]; National Natural Science Foundation of China [11374040, 11274051, 11304018, 11475027]; Foundation of President of the China Academy of Engineering Physics [2014-1-029]; CAEP-FESTC [J2014-0401-03]SCI(E)EIARTICLEliu_jie@iapcm.ac.cn; lbfu@iapcm.ac.cn69