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KMID : 1059519960400120719
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Journal of the Korean Chemical Society
1996 Volume.40 No. 12 p.719 ~ p.723
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Construction of Inverse Photoemission Spectrometer and Its Application
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Kim Jeong-Won
Kim Se-Hun
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Abstract
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An inverse photoemission spectrometer has been built and tested to study the unoccupied electron energy states of solid surfaces. It consists of a low energy electron gun and a band pass photon detector in an ultra-high vacuum chamber. The electron ray tracing simulation and current measurement of the electron gun show a good focus and a high flux of electron current. The overall resolution of the spectrometer is 0.74 eV and the sensitivity of the photon detector is about 10 counts/sec·μA. As a test experiment, the inverse photoemission spectra of a Ge(111) sample is in good agreement with the theoretical result.
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KEYWORD
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