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- Lin-fan Zhu, Heng-Feng Ren, Xiao-jing Liu, Zhen-sheng Yuan, Yi Wu, Ke-zun Xu
- The Journal of chemical physics
- 2005

The dipole-forbidden transition of D1delta <-- X1sigma+ of CO has been observed by a fast electron-energy-loss spectrometer at a large scattering angle of 7 degrees and with an energy resolution of 60 meV. The energy levels and the relative intensity distribution of D1delta, v'=9-25 have been determined, most of the results are reported for the first time.

- Xiao-jing Liu, Lin-fan Zhu, +6 authors Jia-ming Li
- Physical review letters
- 2003

The momentum transfer dependence of fundamental double excitation processes of helium is studied by absolute measurements using an angular resolved fast-electron energy loss spectrometer with high energy resolution. It elucidates the dynamical correlations, in terms of internal correlation quantum numbers, K, T, and A. The Fano profile parameters q, f(a),… (More)

- Long-quan Xu, Ya-wei Liu, +5 authors Lin-fan Zhu
- Scientific reports
- 2015

The dipole (γ, γ) method, which is the inelastic x-ray scattering operated at a negligibly small momentum transfer, is proposed and realized to determine the absolute optical oscillator strengths of the vanlence-shell excitations of atoms and molecules. Compared with the conventionally used photoabsorption method, this new method is free from the line… (More)

- Wen-Bin Li, Lin-fan Zhu, Zhen-sheng Yuan, Xiao-jing Liu, Ke-zun Xu
- The Journal of chemical physics
- 2006

Absolute optical oscillator strength density spectra for valence-shell excitations of HCl and HBr, as well as for Br-3d inner-shell excitations of HBr, have been determined by high-resolution electron-energy-loss-spectroscopy method in the dipole limit. Absolute optical oscillator strengths for the discrete transitions of HCl and HBr are reported and… (More)

- Xiao-Li Zhao, Ke Yang, +6 authors Lin-fan Zhu
- The Journal of chemical physics
- 2015

The Compton profiles of methane and ethane molecules have been determined at an incident photon energy of 20 keV based on the third generation synchrotron radiation, and the statistical accuracy of 0.2% is achieved near pz = 0. The density functional theory with aug-cc-pVTZ basis set was used to calculate the Compton profiles of methane and ethane. The… (More)

- Yi-Geng Peng, Yong Wu, +4 authors Robert J. Buenker
- The Journal of chemical physics
- 2016

K-vacancy Auger states of N(q+) (q = 2-5) ions are studied by using the complex multireference single- and double-excitation configuration interaction (CMRD-CI) method. The calculated resonance parameters are in good agreement with the available experimental and theoretical data. It shows that the resonance positions and widths converge quickly with the… (More)

- You-Yan Wang, Jian-min Sun, Lin-fan Zhu
- The Journal of chemical physics
- 2010

The generalized oscillator strengths, differential cross sections, as well as the integral cross sections for electron impact excitation of the B (1)Delta, C (1)Pi, and D (1)Sigma(+) states of N(2)O have been determined at an incident electron energy of 2500 eV. A generalized oscillator strength analysis reveals that the B (1)Delta<--X (1)Sigma(+)… (More)

We compare electron-scattering data from Ne with first-order Born and distorted-wave calculations in an energy range between 300 and 2500 eV and for scattering angles up to 135◦ and for energy losses up to the ionization energy. At small angles the distorted-wave calculations and first-order Born calculations are in good agreement, but at large momentum… (More)

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