Characteristic secondary electron emission from graphite and glassy carbon surfaces

• Published in: Japanese Journal of Applied Physics Vol. 27; no. 5; pp. L759 - L761
• Main Authors: UENO, K, KUMIHASHI, T, SAIKI, K, KOMA, A
• Format: Journal Article
• Language: English
• Published: Tokyo Japanese journal of applied physics 01-05-1988
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electron and ion emission by liquids and solids; impact phenomena; Electron impact: secondary emission; Exact sciences and technology; Impact phenomena (including electron spectra and sputtering); Physics; Electron energy loss spectrum; Band structure; Density of states; Crystals; Graphite; Secondary electron emission; Amorphous state; Experimental study; Carbon; Comparative study
• ISSN: 0021-4922; 1347-4065
• DOI: 10.1143/jjap.27.l759

Secondary electron emissions (SEE) from graphite and glassy carbon surfaces have been measured. The spectra give several characteristic peaks whose energies are independent of incident electron energies from 20 to 2500 eV. It has been proved that the SEE spectra show good agreement with core electron excitation energy loss spectra and with the calculated density of state (DOS) of the conduction band. Thus, the SEE spectra directly reflect the conduction band DOS above vacuum level, and the difference between the spectra of graphite and glassy carbon comes from the difference in their conduction band structures.