Geodesic
Raman scattering spectra of carbon materials used as cathodes of auto-emission radiation sources
Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematika, mehanika, fizika, Tome 15 (2023) no. 2, pp. 41-47 Cet article a éte moissonné depuis la source Math-Net.Ru

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Structured carbon materials are widely used in engineering and scientific research, in particular as materials for the auto-emission cathode of cathodoluminescent lamps. We apply Raman spectroscopy to determine the effect on fine-grained graphite (MPG-6), pyrolytic graphite, and PAN fibers when used as cathodes. Raman scattering spectra of all three materials were recorded before and after in the spectral range from 1000 to 2000 cm$^{-1}$. In addition to the main lines of G, D, and D’ of carbon materials, we found a line in the range of (1450–1460) cm$^{-1}$ in the initial pyrolytic graphite, in pyrolytic graphite after use as a cathode, and in the MPG-6 sample after use as a cathode. We observed the greatest change in the relative integral intensity of line D in pyrolytic graphite and MPG-6. This intensity increased in pyrolytic graphite and decreased in MPG-6 after use as a cathode. It will be possible to use the relative integral intensity of line D to evaluate the operation of a cathodoluminescent lamp.
Keywords: Raman scattering spectra, carbon materials, structured materials
Mots-clés : auto-emission cathode. 
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     title = {Raman scattering spectra of carbon materials used as cathodes of auto-emission radiation sources},
     journal = {Vestnik \^U\v{z}no-Uralʹskogo gosudarstvennogo universiteta. Seri\^a, Matematika, mehanika, fizika},
     pages = {41--47},
     year = {2023},
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     number = {2},
     language = {ru},
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%A E. P. Sheshin
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K. N. Belov; A. S. Berdnikov; V. B. Kireev; N. D. Kundikova; D. N. Prosekov; Duc Man Fung; E. P. Sheshin. Raman scattering spectra of carbon materials used as cathodes of auto-emission radiation sources. Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematika, mehanika, fizika, Tome 15 (2023) no. 2, pp. 41-47. http://geodesic.mathdoc.fr/item/VYURM_2023_15_2_a5/

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