dc.creator Arunan, E. en_US dc.creator Emilsson, T. en_US dc.creator Gutowsky, H. S. en_US dc.date.accessioned 2007-11-20T17:12:02Z dc.date.available 2007-11-20T17:12:02Z dc.date.issued 1995 en_US dc.identifier 1995-TB-03 en_US dc.identifier.uri http://hdl.handle.net/1811/29745 dc.description 1. G. T. Fraser, Int. Rev. Phys. Chem. 10. 189 (1991). en_US dc.description Author Institution: Indian Institute of Technology, Kanpur 208016, India.; University of Illinois, Urbana. IL, 61801. en_US dc.description.abstract We report the rotational spectra of the weakly bound $Ar-(H_{2}O)_{2}$ and $Ar-(D_{2}O)_{2}$ clusters, studied with a Balle/Flygare pulsed beam FTMW spectrometer. Preliminary results indicate that all of the tunneling paths observed for the $(H_{2}O)_{2}$ dimer are apparent in the trimer even though the presence of Ar does affect the tunneling frequency and observed splittings. Both the a and b dipole transitions have been observed. The $E_{1}$ $state^{1}$ transitions could be fitted to a semi-rigid rotor using the Watson Hamiltonian. The rotational constants thereby obtained are listed below (MHz): $\begin{array}{cccc}&A&B&C\\Ar-(H_{2}O)_{0}&6253.057(2)&2428.431(1)&1739.564(1)\\Ar-(D_{2}O)_{2}&5517.465(3)&2280.931(1)&1614.026(2)\end{array}$ From the observed splitting of the b dipole transitions for $Ar-(D_{2}O)_{2}$ the donor-acceptor tunneling frequency is found to be 106.3 MHz compared to 1172.5 MHz for the $(D_{2}O)_{2}$ dimer. en_US dc.format.extent 51490 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title ROTATIONAL SPECTRA, STRUCTURES, AND TUNNELING DYNAMICS OF $Ar-(H_{2}O)_{2}$ AND $Ar-(D_{2}O)_{2}$ en_US dc.type article en_US
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