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# COUPLED VIBRATIONS IN ALKALI HALOGENATES

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/16063

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 Title: COUPLED VIBRATIONS IN ALKALI HALOGENATES Creators: Soriaga, M. P.; Neufeld, J.; Andermann, G. Issue Date: 1973 Abstract: Studies based on band shape analyses indicate that for alkali halogenates, such as $NaClO_{3}, KClO_{3}, NaBrO_{3}$, and $KBrO_{3}$, the external (lattice) modes may be described as those of independent, damped harmonic oscillators. The very short lifetimes of the excited states of these modes, on the other hand, indicate the presence of coupling. The inherent contradiction of the above statements may be removed if the dissipation of lattice energy is rationalized in terms of coupling schemes which are not due to phonon-phonon interactions but require the mechanisms based on interactions involving internal modes. Direct experimental evidence on combination modes will be offered and evaluated. URI: http://hdl.handle.net/1811/16063 Other Identifiers: 1973-M-09