000063735 001__ 63735
000063735 005__ 20190117190652.0
000063735 02470 $$2ISI$$a000228287900021
000063735 02470 $$2DAR$$a6539
000063735 037__ $$aARTICLE
000063735 245__ $$aDipole moments of HDO in highly excited vibrational states measured by Stark induced photofragment quantum beat spectroscopy
000063735 269__ $$a2005
000063735 260__ $$c2005
000063735 336__ $$aJournal Articles
000063735 520__ $$aWe report here a measurement of electric dipole moments in highly vibrationally excited HDO molecules. We use photofragment yield detected quantum beat spectroscopy to determine electric field induced splittings of the J=1 rotational levels of HDO excited with 4, 5, and 8 quanta of vibration in the OH stretching mode. The splittings allow us to deduce mu(a) and mu(b), the projections of dipole moment onto the molecular rotation inertial axes. We compare the measured HDO dipole moment components with the results of quantitative calculations based on Morse oscillator wave functions and an ab initio dipole moment surface. The vibrational dependence of the dipole moment components reflect both structural and electronic changes in HDO upon vibrational excitation; principally the vibrational dependence of the O-H bond length and bond angle, and the resulting change in orientation of the principal inertial coordinate system. The dipole moment data also provide a sensitive test of theoretical dipole moment and potential energy surfaces, particularly for molecular configurations far from equilibrium.
000063735 700__ $$0241749$$aTheule, P$$g131576
000063735 700__ $$0240904$$aCallegari, A$$g117076
000063735 700__ $$0242829$$aRizzo, Thomas R.$$g106239
000063735 700__ $$aMuenter, JS
000063735 773__ $$j122$$q124312$$tJournal of Chemical Physics
000063735 909C0 $$0252096$$pLCPM$$xU10106
000063735 909CO $$ooai:infoscience.tind.io:63735$$pSB$$particle
000063735 937__ $$aLCPM-ARTICLE-2005-002
000063735 970__ $$aISI:000228287900021/LCPM
000063735 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000063735 980__ $$aARTICLE