摘要
We report here the first measurements of momentum profiles for the propane (C3H8)valence orbitals using high resolution (△E=0.9 eV FWHM, △p=0.1 a.u.) (e,2e) electron momentum spectrometer. The impact energy was 1200 eV with binding energy l206 to 1232 eV andsymmetric non-coplanar kinematics was employed. The inner-valence spectrum is in agreementwith published photoelectron data. Excited ionic states corresponding to many-body electron correlation processes were observed for propane above 25 eV. The expeyimental momentum profileswere compared with calculations obtained using Hartree-Fock method with the minimum basis setand a high-level basis set, and also using density functional theory (DFT) local density and nonlocal density methods with a high level basis set. The agreement between theory and experimentfor the shape of orbital electron momentum distributions is generally good.
We report here the first measurements of momentum profiles for the propane (C3H8)valence orbitals using high resolution (△E=0.9 eV FWHM, △p=0.1 a.u.) (e,2e) electron momentum spectrometer. The impact energy was 1200 eV with binding energy l206 to 1232 eV andsymmetric non-coplanar kinematics was employed. The inner-valence spectrum is in agreementwith published photoelectron data. Excited ionic states corresponding to many-body electron correlation processes were observed for propane above 25 eV. The expeyimental momentum profileswere compared with calculations obtained using Hartree-Fock method with the minimum basis setand a high-level basis set, and also using density functional theory (DFT) local density and nonlocal density methods with a high level basis set. The agreement between theory and experimentfor the shape of orbital electron momentum distributions is generally good.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1998年第10期874-876,共3页
Acta Physico-Chimica Sinica
基金
国家自然科学基金
中国博士后基金
