All Figures

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2658fig1.eps} \end{figure}$ Figure 1: The four lowest adiabatic potential curves of linear HCNH as a function of $\ensuremath {R_{{\rm CH}}}$ . The dotted line is the ion curve. The tic marks on the curves indicate the points at which calculations were performed. The solid curve is a spline. (The calculated energies have been shifted uniformly by +90 au.) The symbol ( $\times$ ) denotes the calculations of Talbi & Ellinger (1998), shifted vertically to agree with the present results at the ion equilibrium position.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2658fig2.eps} \end{figure}$ Figure 2: The four diagonal elements of the diabatic Hamiltonian as a function of $\ensuremath {R_{{\rm CH}}}$ . The dotted line is the ion curve. (The calculated energies have been shifted uniformly by +90 au.) The v=0 level of the ion and a harmonic oscillator wave function is shown ( $\ensuremath {R_{{\rm CH}}}$ motion only). The symbols ( $\circ$ ) and ( $\Box$ ) indicate the diabatic curves dominated by the antibonding orbital $\ensuremath {\sigma _{{\rm CH}}^*}$ and $\ensuremath {\sigma _{{\rm NH}}^*}$ , respectively.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2658fig3.eps} \end{figure}$ Figure 3: The four lowest adiabatic potential curves of linear HCNH as a function of $\ensuremath {R_{{\rm NH}}}$ . The dotted line is the ion curve. The tic marks on the curves indicate the points at which calculations were performed. The solid curve is a spline. (The calculated energies have been shifted uniformly by +90 au.) The symbol ( $\times$ ) denotes the calculations of Talbi & Ellinger (1998), shifted vertically to agree with the present results at the ion equilibrium position.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2658fig4.eps} \end{figure}$ Figure 4: The four diagonal elements of the diabatic Hamiltonian as a function of $\ensuremath {R_{{\rm NH}}}$ . The dotted line is the ion curve. (The calculated energies have been shifted uniformly by +90 au.) The v=0 level of the ion and a harmonic oscillator wave function is shown ( $\ensuremath {R_{{\rm NH}}}$ motion only). The symbols ( $\circ$ ) and ( $\Box$ ) indicate the diabatic curves dominated by the antibonding orbital $\ensuremath {\sigma _{{\rm CH}}^*}$ and $\ensuremath {\sigma _{{\rm NH}}^*}$ , respectively.
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In the text