Small-Angle Electron Diffraction by Gases. : An Apparatus with Electron-Counting Device
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概要
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An electron-diffraction unit with a scintillation-counting system is designed and constructed for the purpose of precisely measuring scattered intensities of fast electrons in a small-angle region, 5 mrad-90 mrad. By means of a new scanning technique, an accuracy of 0.01_5 mrad is attained. The intensities of 42keV electrons scattered by water molecules are measured with a precision of about 1% in the s-range of 1 to 8Å^<-1>. A chemical binding energy of 0.3_5±0.1 au is obtained from the differences between the observed and theoretical intensities based on the independent atom model. This is in good agreement with a reported value derived from a thermochemical method.
- 社団法人応用物理学会の論文
- 1972-08-05
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関連論文
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