Large isotope effects in photodissociation of polyatomic molecules

Yehuda B. Band; Karl F. Freed

doi:10.1063/1.431170

Large isotope effects in photodissociation of polyatomic molecules

Yehuda B. Band, Karl F. Freed

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Abstract

The example of the photodissociation of HCN is used to demonstrate the existence of huge isotope effects in general classes of the photodissociation of polyatomic molecules. The isotopic ratio of photodissociation rates is of the form exp[(μ₁^1/2-μ₂^1/2)K], where μ₁ and μ₂ are the reduced masses of the atomic fragments (different isotopes), and where K is dependent on molecule and fragment normal modes as well as upon the interfragment repulsive potential. Conditions for the maximization of K are discuss.

Original language	English
Pages (from-to)	4479-4484
Number of pages	6
Journal	Journal of Chemical Physics
Volume	63
Issue number	10
DOIs	https://doi.org/10.1063/1.431170
State	Published - 1 Jan 1975
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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abstract = "The example of the photodissociation of HCN is used to demonstrate the existence of huge isotope effects in general classes of the photodissociation of polyatomic molecules. The isotopic ratio of photodissociation rates is of the form exp[(μ11/2-μ21/2)K], where μ1 and μ2 are the reduced masses of the atomic fragments (different isotopes), and where K is dependent on molecule and fragment normal modes as well as upon the interfragment repulsive potential. Conditions for the maximization of K are discuss.",

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N2 - The example of the photodissociation of HCN is used to demonstrate the existence of huge isotope effects in general classes of the photodissociation of polyatomic molecules. The isotopic ratio of photodissociation rates is of the form exp[(μ11/2-μ21/2)K], where μ1 and μ2 are the reduced masses of the atomic fragments (different isotopes), and where K is dependent on molecule and fragment normal modes as well as upon the interfragment repulsive potential. Conditions for the maximization of K are discuss.

AB - The example of the photodissociation of HCN is used to demonstrate the existence of huge isotope effects in general classes of the photodissociation of polyatomic molecules. The isotopic ratio of photodissociation rates is of the form exp[(μ11/2-μ21/2)K], where μ1 and μ2 are the reduced masses of the atomic fragments (different isotopes), and where K is dependent on molecule and fragment normal modes as well as upon the interfragment repulsive potential. Conditions for the maximization of K are discuss.

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Large isotope effects in photodissociation of polyatomic molecules

Abstract

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