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DIODE LASER SPECTROSCOPY OF $Ar-NH_{3}$ COMPLEX

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/29880

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Title: DIODE LASER SPECTROSCOPY OF $Ar-NH_{3}$ COMPLEX
Creators: Xu, Songlin; Sharpe, Steven W.; Fraser, G. T.
Issue Date: 1995
Abstract: The rovibrational spectrum of several $\Sigma \leftarrow \Sigma$ and $\Pi \leftarrow \Sigma$ type bands of $Ar-NH_{3}$ complex formed in a slit-jet supersonic expansion has been observed over the $v_{2}$ fundamental region of $NH_{3}$ with a tunable diode laser. The complicated spectrum due to the inversion and nearly free internal rotation of the $NH_{3}$ unit has been assigned based on a previous $work^{1}$, which shows that the upper and lower states of the observed transitions are correlated to $NH_{3}(j=0, 1, 2; k^{\prime}=0, 1)$ and $NH_{3}(j^{\prime\prime}=0, 1; k^{\prime\prime}=0, 1)$ states respectively. By using a rotational-internal-rotational-inversion Hamiltonian for spectral analysis, spectroscopic constants related to these bands have been determined and the vibrational dependence to the Legendre coefficients has been evaluated, leading to accurate characterization of the intermolecular potential surface for the excited vibrational state.
URI: http://hdl.handle.net/1811/29880
Other Identifiers: 1995-TL-04
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