Investigation of electron momentum spectroscopy for inner valence orbitals 4ag +4bu of diacetyl

Document Type

Article

Publication Date

4-1-2005

Abstract

The ionization energy spectra and the spherically averaged momentum distributions of inner valence orbitals for diacetyl have been investigated by using a high resolution (ΔE = 1.15 eV, Δp ≈ 0.1 a.u.) electron momentum spectrometer. The impact energy was 1200 eV plus binding energy (i.e. 1201-1240 eV) and a symmetric non-coplanar kinematics was employed. The experimental ionization energy spectra have been compared with the published photoelectron spectra. The momentum profiles of inner valence orbitals 4ag + 4bu have been compared with the theoretical calculations obtained using Hartree-Fock method and density functional theory. The measured momentum distribution is consistent with the theoretical calculations.

Publication Source (Journal or Book title)

Wuli Xuebao/Acta Physica Sinica

First Page

1552

Last Page

1556

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