BOUND STATES OF THE VAN DER WAALS MOLECULES $H_{2}Ar, H_{2}Kr$ AND $H_{2}Xe$
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Date
1966
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Ohio State University
Abstract
With an absorption path length of $\sim 13 m$ in $H_{2}$-rare gas mixtures above the boiling point of the rare gas, the Q, S(0) and S(1) components of the pressure-induced fundamental infrared band of $H_{2}$ exhibit a fine structure which can be interpreted as transitions between bound states of $H_{2}$-rare gas complexes. The fine structure is best defined for the S(0) transition in mixtures with pure parahydrogen. The pattern consists of well-resolved T and N branches, $\Delta l = \pm 3$, where l is the rotational quantum number of the complex, and two broad central components with partially resolved structures. The complexes with Ar, Kr and Xe show 7, 9 and 11 bound states, respectively, and the spacings of the T and N lines can be used to calculate effective rotational constants for the complexes. Studies of the temperature dependence of the complex formation will be discussed.
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Author Institution: Department of Physics, University of Toronto