Research Papers in Physics and Astronomy


Date of this Version

August 1970


Published by American Physical Society. Phys. Rev. Lett. 25, 446 (1970). Copyright © 1970 American Physical Society. Permission to use.


Transient absorption spectra produced by pulsed electron excitation at low temperature have been identified as due to transitions originating in the lowest triplet states of the self-trapped exciton. The current model, comprising an electron plus a self-trapped hole, is shown to provide electronic configurations for the higher excited states which give a good account of the principal features of the spectra.

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