Energy Spectra of Thermally Stimulated Exoelectrons from KCl:TI X-Irradiated at 77K

概要

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Simultaneous measurements of the energy spectra of thermally stimulated exoelectrons and of the surface potential are carried out on KCl: Tl X-irradiated at 77 K. It is found that high energetic exoelectrons are emitted when the sample surface is charged up positive and that the width of their energy spectra is larger than the non-uniform spread of the surface potential (patch field). These results suggest that the energy spectra of the thermally stimulated exoelectrons from KCl: Tl may be interpreted using a space charge model, in which the exoelectrons are accelerated by the internal electric field and are scattered by the optical modes of lattice vibrations during the transport of the exoelectrons to the surface, although the patch field effect also is thought to contribute to the energy spectra of the exoelectrons.
社団法人応用物理学会の論文
1984-03-20