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Kinetics of radiation cooling of fullerenes

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Abstract

Emission from fullerene molecules excited by means of electron impact in crossed beams under conditions of single collisions between electrons and C60 molecules in a kinetic energy range E e from 25 to 100 eV was studied experimentally. Emission spectra in a wavelength range from 300 to 800 nm; the emission excitation functions and the temperature of emitting molecules as a function of E e were measured with a resolution of 1.6–3.2 nm. The contribution to emission from ionized C +*60 molecules has been determined and data on the emissivity of the C +*60 ion have been obtained. It has been shown that the emission spectra can be well approximated with the spectral distribution of thermal emission from a black body (Planck’s formula), taking into account the lowering of emissivity for a small particle. The emission can be observed starting with electron energy of about 27 eV; the emission excitation function is of a nonresonant form, peaking at an energy of E e ≈70 eV. As E e is increased, the temperature of emitting particles rises and reaches its maximum value of 3100–3200 K at E e ≈47 eV.

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    A. A. Vostrikov, A. A. Agarkov & D. Yu. Dubov

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  1. A. A. Vostrikov
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  2. A. A. Agarkov
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  3. D. Yu. Dubov
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__________

Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 70, No. 7, 2000, pp. 102–108.

Original Russian Text Copyright © 2000 by Vostrikov, Agarkov, Dubov.

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Vostrikov, A.A., Agarkov, A.A. & Dubov, D.Y. Kinetics of radiation cooling of fullerenes. Tech. Phys. 45, 915–921 (2000). https://doi.org/10.1134/1.1259748

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