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Optical and Photoemission Properties of Graphite Grains

Published online by Cambridge University Press:  14 August 2015

R. F. Willis ,
B. Feuerbacher  and
B. Fitton
R. F. Willis
Affiliation:
Surface Physics Division, European Space Research Organisation, Noordwijk, Holland
B. Feuerbacher
Affiliation:
Surface Physics Division, European Space Research Organisation, Noordwijk, Holland
B. Fitton
Affiliation:
Surface Physics Division, European Space Research Organisation, Noordwijk, Holland

Abstract

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The optical properties and collective excitations are discussed for graphite and vitreous carbon. The bulk resonance energy for the π-plasmon is seen to be shifted by 1.4 eV from the crystalline to the amorphous case, indicating that the degree of structural disorder is an important parameter in the optical properties of carbon grains. Data are presented on work function, photoelectric yield, and photoelectron energy distribution for both graphite and vitreous carbon. Under solar irradiation, photoelectrons from graphite are emitted with an average energy of about 1 eV (12000 K).

Type
Part VI Physical Processes, Theory and Experiment
Information
Symposium - International Astronomical Union , Volume 52: Interstellar Dust and Related Topics , 1973 , pp. 303 - 309
Copyright
Copyright © Reidel 1973 

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