Faculté des sciences

Nondipole channels in the electron-energy-loss structure near the 3s edge of copper

Aebi, Philipp ; Erbudak, M. ; Vanini, F. ; Vvedensky, D. D. ; Kostorz, G.

In: Physical Review B, 1992, vol. 42, no. 8, p. 5369-5372

Electronic transitions near the 3s edge of copper are investigated with electron-energy-loss spectroscopy and compared with real-space multiple-scattering calculations. Calculating the generalized oscillator strength illustrates the importance of dipole-forbidden transitions in the near-edge region and shows for the first time the feasibility of making detailed comparisons between theory... More

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    Summary
    Electronic transitions near the 3s edge of copper are investigated with electron-energy-loss spectroscopy and compared with real-space multiple-scattering calculations. Calculating the generalized oscillator strength illustrates the importance of dipole-forbidden transitions in the near-edge region and shows for the first time the feasibility of making detailed comparisons between theory and electron-energy-loss measurements without resorting to the dipole approximation.