ABSORPTION SPECTROCOPY OF $\Sigma0_{0} \rightarrow \Pi 1_{0}$ BAND IN $Rg\cdot ND_{3} (Rg = Ne, Ar, Kr)$

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 Title: ABSORPTION SPECTROCOPY OF $\Sigma0_{0} \rightarrow \Pi 1_{0}$ BAND IN $Rg\cdot ND_{3} (Rg = Ne, Ar, Kr)$ Creators: Melnik, Dmitry G.; Bataiev, Mykola; Miller, Terry A.; De Lucia, Frank C. Issue Date: 2001 Abstract: Previously, we have reported the $\Sigma 0_{0} \rightarrow \Pi 1_{0}$ vibrational-tunneling-rotational (VTR) transition in the $Ar\cdot ND_{3}$ $complex.^{a}$ Here we report the first observation of the corresponding transition in in the $Ne\cdot ND_{3}$ and $Kr \cdot ND_{3}$ complexes using a pulsed jet FASSST spectrometer operating in the 195-298 GHz region. The inversion components of the VTR band corresponding to different nuclear spin states, are observed for all complexes $Rg\cdot ND_{3} (Rg = Ne, Ar, Kr)$. The experimental data were fit to a pseudo-diatomic $Hamiltonian,^{b}$ yielding molecular constants, including the value of the inversion splitting, $\Delta$, in the complexes. A semiquantitative model of the (moderate) quenching of the inversion splitting in the complex is proposed. URI: http://hdl.handle.net/1811/20217 Other Identifiers: 2001-TD-03