Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Excitation from Superexcitation of Hydrocarbons. Estimation of Their Yields by the Optical Approximation
Yoshihiko Hatano
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1968 Volume 41 Issue 5 Pages 1126-1129


A simple calculation has been made based on the so-called optical approximation to obtain the yields of excitation from superexcitation of the hydrocarbons, methane, ethane, propane, n-butane, n-pentane, ethylene, propylene, butene-1, butene-2, 1,3-butadiene, acetylene, and cyclopropane. Their dipole-matrix-elements squared for excitation from superexcitation, Md2, have been found to be directly proportional to the number of carbon atoms in the hydrocarbons, and the ratio of Md2 to Mi2, the dipole-matrix-element squared for ionization, is about 0.2. Thus, the yields, per 100 eV energy absorbed, of excitation from superexcitation are nearly equal to 0.8 for all the hydrocarbons described here.

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