Valence Shell Ionization Spectra of Propane by (e, 2e) Spectroscopy

The measurements of the valence shell ionisation energy spectra (6-32eV) for propane (C₃H₈) by high resolution (ΔE = 0.9eV and Δp = 0.1 a.u.) (e, 2e) spectrometer at impact energy of 1200eV plus binding energy and symmetric noncoplanar kinematics are reported. The spectrum is consistent with a single particle picture of ionization from each of the seven outer-valence orbitals and the three inner-valence orbitals. The ionization energies are in agreement with published photoelectron spectroscopy data.