title: High resolution electron momentum spectroscopy of dichlorodifluoromethane: unambiguous assignments of outer valence molecular orbitals.
abstract: On account of controversial orbital assignment that appeared in previous works, [J. Chem. Phys. 120, 7933 (2004), and references therein] high resolution electron momentum spectroscopy (EMS) measurements on dichlorodifluoromethane has been carried out using a newly developed high resolution energy-momentum dispersive multichannel spectrometer employing asymmetric noncoplanar geometry at an impact energy of 2500 eV plus binding energy. Four resolved structures and two shoulders were obviously observed in high resolution binding energy spectrum in energy range covering eight outermost valence orbitals, whereas only two broad lobes were resolved in previous EMS studies [J. Chem. Phys. 120, 7933 (2004); Chin. Phys. 14, 2467 (2005)]. The ordering of these orbitals was reassigned unambiguously by simple comparison of experimental momentum distributions with theoretical ones.
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, PRC.
authors.forename: Xu
authors.initials: X
authors.lastname: Shan
authors.forename: Xiang Jun
authors.initials: XJ
authors.lastname: Chen
authors.forename: Li Xia
authors.initials: LX
authors.lastname: Zhou
authors.forename: Zhong Jun
authors.initials: ZJ
authors.lastname: Li
authors.forename: Tao
authors.initials: T
authors.lastname: Liu
authors.forename: Xin Xia
authors.initials: XX
authors.lastname: Xue
authors.forename: Ke Zun
authors.initials: KZ
authors.lastname: Xu