(Color online) Selected vibrational wave functions of superimposed on the diatomic potential energy curve. The corresponding energies are given in Table III, for up to .
(Color online) Dependence of the , , and parameters of Eq. (4) as a function of and . The symbols refer to the ab initio results for each value (Ref. 27).
(Color online) Analytical potential energy curves of -shaped for (dotted line), (dashed line), (dashed-dotted line), and (solid line). The symbols refer to the ab initio results.
(Color) Contour plot of the potential, [see Eq. (5)], in the plane. The molecule is aligned along axis and He atom is moving in the plane. The I–I separation is fixed at its equilibrium value . Contour lines are for energies from by steps of .
(Color online) Experimental [solid (Ref. 10) and dashed (Refs. 8 and 9) lines] and theoretical (symbols) lifetimes for the vibrational predissociation of as a function of the vibrational excitation. The calculated lifetimes are shown for vdW modes (circles), 1 (diamonds), and 2 (triangles).
Adjusted parameters from Eq. (4) with , and .
Binding energies in of the conformers in the indicated electronic and vibrational states.
Experimental and calculated spectral blueshifts for the transition between the -shaped vdW ground levels. The value of Ref. 26 is used in fourth column. Columns 2 and 3 refer to the energies of and to the dissociation energies of , respectively. All energies are in .
Experimental and theoretical energies in for the vdW levels. The value of Ref. 26 is used to calculate the expected spectral blueshifts arising from the linear isomer in the fifth column.
Experimental and calculated vibrational predissociation lifetimes in picosecond for .
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