Acta Phys. -Chim. Sin. ›› 1998, Vol. 14 ›› Issue (11): 965-967.doi: 10.3866/PKU.WHXB19981102

• Communication • Previous Articles     Next Articles

Investigated of Valence Orbital Electron Structure for C4H10

Pang Wen-Ning, Gao Nai-Fei, Shang Ren-Cheng, Zhang Wen-Xin, Zheng Yan-You, Chen Xue-Jun   

  1. Department of Physics,Tsinghua University,Beijing 100084
  • Received:1998-07-07 Revised:1998-08-19 Published:1998-11-15
  • Contact: Pang Wen-Ning


We report here the measurements of valence electron structure for the n-butane (C4H10) using high resolution (ΔE=0.9 eV FWHM, ΔP=0.1 a.u.) (e,2e) spectrometer. The impact energy was 1200eV plus binding energy (i.e. 1206 to 1232 eV) and symmetric non-coplanar kinematics was employed. The inner-and outer-valence energy spectrum is in agreement with published Photoelectron data. The experimental momentum profiles have been compared with calculations obtained using Hartree-Fock method with the minimum basis set and a high-level basis set, and also using density functional theory (DFT) density methods with a high level basis set. The agreement between theory and experiment for shape of orbital electron momentum distributions is generally good.

Key words: C4H10, Binding energy spectra, Momentum profiles