Configuration interaction dissociation curves

Figure 6.2 The volcano-like potential of the ground state of BeH ". Its minimum is local, since it is above the dissociation limit of Be - - H. The curve was computed by the method of configuration interaction. Also depicted are the corresponding eigenfunctions of the 8 shape resonance states that this potential can support, e.g.. Ref p3]. These, as well as those representing states above the barrier, were obtained from the diagonalization of a basis of 120 box-normalized trigonometric functions. The box length was Ri= 10 a.u. The picture of tunneling is clearly enhanced for the top two shape resonances. (From Ref [50].)...

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