Surface Losses of Alkali Halide Single Crystals in Electron Energy Loss Spectra

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概要

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• Angle resolved electron energy loss spectra of alkali halide single crystals have beenmeasured with primary energies from 50 to 950 eV, and incident and scattering anglesfrom 20 to 80'. The loss spectra show not only the loss peaks which have been ob-served in the transmission measurements at higher primary energies but also the sur-face losses at 7.4 eV for KCI, 6.6 eV for KBr, 9.3 eV for NaF and 10.5 eV for LiF.The intensities of these surface loss peaks decrease both with the increase in primaryenergies and with the decrease in incident angles. These peaks are slightly below thefirst exciton excitation energy and attributed to the excitation of the surface exciton.Moreover, it is found from the angular dependence of the intensities of the in-elastically scattered electrons that the inelastic scattering is not the dipole but the impact scattering.

• 社団法人日本物理学会の論文
• 1988-01-15

著者

• MABUCHI Teruhiko

  Institute for Optical Research, Kyoiku University

• Mabuchi Teruhiko

  Institute For Applied Physics University Of Tsukuba

関連論文

• Absorption Spectra of Au^- Ions in Alkali Halides
• Zeeman Effect of the A Absorption Bands in Tl- and Pb-Doped Alkali Halides
• Zeeman Effect of the Exciton Bands of CuCl-CuBr Solid Solutions
• Optical Absorption Line Shape for the B Band of Tl^+-Like Ions in Alkali Halides
• Surface Phonons of NaF and LiF Films
• Surface Defects of KBr Produced by Electron Irradiation
• Molecular Orbitals of (NH_4)_2SO_4:Tl
• Crystal Fields of (NH_4)_2SO_4 Crystal
• Surface Losses of Alkali Halide Single Crystals in Electron Energy Loss Spectra
• A New Type of Absorption Band in NaCl: Pb and KCl:Pb
• Temperature Dependence of Absorption Bands of (NH_4)_2SO_4:Tl Crystal

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